Iharu Furuhashi Best Build Guide - Kaiju No. 8 The Game
Build the best Iharu Furuhashi in Kaiju No. 8 The Game. Full guide on uniparts, weapons, awakening priority, and Shock-based team comps for this 4★ Supporter.
.jpg)
Table of Contents
- Character Overview
- Best Uniparts Setup
- Best Weapon Choice
- Skill Upgrade Priority
- Awakening Priority
- Best Team Compositions
- FAQ
Character Overview
Iharu Furuhashi is a 4★ ShotLightning-type Supporter who excels at applying Shock (Lightning DoT) and DEF debuffs. He is a meta 4★ unit who remains relevant long after most starter characters fall off.
Basic Info
| Stat | Value |
|---|---|
| Rarity | 4★ |
| Type | ShotLightning |
| Role | Supporter |
| How to Get | Gacha |
| Overall Tier | A |
| Inflicted Ailment | Shock |
Passive Ability
All allies’ Effect Hit Rate +7%.
This passive is deceptively powerful. A flat 7% team-wide Effect Hit Rate increase improves debuff reliability for every unit in the party. In a game where landing debuffs can make or break a boss fight, this passive alone makes Iharu roster-worthy.
Skills Overview
| Skill | Effect |
|---|---|
| Combat Skill | Applies Shock (Lightning DoT) to target |
| Ultimate | Deals damage and applies DEF debuff to target |
Iharu’s Combat Skill is his primary tool. The Shock application turns him into a consistent DoT engine. His Ultimate adds a DEF debuff that amplifies the entire team’s physical damage output.
Stats Overview
| Stat | Rating | Notes |
|---|---|---|
| ATK | B | Decent base for a 4★ Supporter. DoT scales with ATK. |
| Effect Hit Rate | A | Needs heavy investment. More = more reliable Shock. |
| HP | C | Standard 4★ durability. Position behind your tank. |
| SPD | B+ | Good base speed for a Supporter. Applies debuffs early. |
| DEF | C | Average. Avoid direct engagement. |
Profile
Iharu is a hot-blooded Defense Force officer who idolizes Mina Ashiro. His rivalry-turned-friendship with Reno is a fan-favorite dynamic. In-game, he delivers on his promise of supporting the team through status effects and debuffs.
“I’ll clear a path for you, Captain!” — Iharu Furuhashi
Best Uniparts Setup
Iharu’s unipart choice is clear: he wants Effect Hit Rate to land Shock, and ATK to increase his DoT damage. The Spider-Type set fits both requirements perfectly.
Primary Set: Spider-Type (ATK)
| Slot | Main Stat | Priority Substats |
|---|---|---|
| Slot 1 (ATK) | ATK% | Effect Hit Rate, SPD |
| Slot 2 (HP) | ATK% | Effect Hit Rate, DEF% |
| Slot 3 (DEF) | ATK% | Effect Hit Rate, HP% |
| Slot 4 (SPD) | ATK% | Effect Hit Rate, SPD |
| Slot 5 (CRIT) | Effect Hit Rate | ATK%, SPD |
| Slot 6 (Special) | ATK% | Effect Hit Rate, SPD |
Why Spider-Type: The Spider-Type (ATK) set provides:
- ATK main stats — Shock DoT damage scales with ATK
- Effect Hit Rate substats — Critical for landing Shock reliably
- Set bonus: DMG vs debuffed enemies — Iharu himself applies Shock and DEF debuffs, so this triggers constantly
Spider-Type is arguably more valuable on Iharu than on dedicated DPS units because he needs both ATK and Effect Hit Rate, which this set provides equally well.
Alternative Set: Lizard-Type (ATK)
| Slot | Main Stat | Priority Substats |
|---|---|---|
| All | ATK% | Effect Hit Rate |
Why Lizard-Type: Pure ATK scaling. Use this if your Spider-Type pieces have poor Effect Hit Rate substats. You will need to compensate with Effect Hit Rate from weapon substats or team passives.
Stat Priority Summary
| Priority | Stat | Reason |
|---|---|---|
| 1st | ATK% | Directly increases Shock DoT damage and Ultimate damage |
| 2nd | Effect Hit Rate | Landing Shock is non-negotiable for his kit |
| 3rd | Elemental DMG | Generic damage multiplier |
| 4th | SPD | Faster rotations = more debuff uptime |
How Much Effect Hit Rate Do You Need?
Based on community testing, aim for 60-80% Effect Hit Rate from gear and passives combined. This gives reliable Shock application on most enemies. Bosses with higher debuff resistance may require more.
Pro Tip: Iharu’s own passive (+7% team Effect Hit Rate) does NOT stack with itself. However, another Iharu support unit would stack. This is relevant for dual-Supporter compositions.
Best Weapon Choice
Iharu needs a weapon that balances ATK for DoT damage with Effect Hit Rate for reliable Shock application.
Best Slot: AR-Cronus (5★ AR)
| Stat | Value |
|---|---|
| Rarity | 5★ |
| Type | AR |
| Main Stat | ATK |
| Substats | CRIT Rate |
| Recommended For | Iharu + Reno, Iharu + Aoi |
Why AR-Cronus: The CRIT Rate substat is universally useful, and the base ATK is high enough to push Iharu’s Shock DoT damage into respectable territory. It is considered the best general AR for Shock-team supporters.
Strong Alternative: AR-Boreas (5★ AR)
| Stat | Value |
|---|---|
| Rarity | 5★ |
| Type | AR |
| Main Stat | ATK |
| Substats | CRIT Rate |
| Recommended For | Iharu + Reno + Mina |
Why AR-Boreas: Similar to AR-Cronus but with slightly different stat distribution. AR-Boreas is recommended specifically for the Iharu + Reno + Mina team core. The CRIT Rate helps Reno’s Freeze application as well.
Budget Option: 4★ Effect Hit Rate AR
| Stat | Value |
|---|---|
| Rarity | 4★ |
| Type | AR |
| Main Stat | ATK |
| Substats | Effect Hit Rate |
Why budget: For early game, landing Shock is more important than Iharu’s personal damage. A 4★ AR with Effect Hit Rate substats ensures reliable debuff application. Upgrade to 5★ ARs when you pull them.
Weapon Priority
| Priority | Weapon | Why |
|---|---|---|
| 1st | AR-Cronus (5★) | Best-in-slot for Shock comps |
| 2nd | AR-Boreas (5★) | Strong alternative for specific teams |
| 3rd | 4★ Effect Hit Rate AR | Budget option, functional through mid-game |
Note: Iharu’s weapon choice matters less for personal damage and more for team utility. Prioritize weapons that help him land debuffs reliably over raw damage.
Skill Upgrade Priority
Iharu’s skill value comes from debuff application and DoT damage, not burst damage. Skill levels improve both application chance and damage.
Skill Overview
| Skill | Type | Priority |
|---|---|---|
| Combat Skill | Active (Shock application) | 1st |
| Ultimate | Active (DEF debuff + damage) | 2nd |
| Passive | Auto (Team Effect Hit Rate) | 3rd |
| Normal Attack | Basic | 4th |
Upgrade Order
| Priority | Skill | Reason |
|---|---|---|
| 1st | Combat Skill | Higher level = higher Shock base chance + more DoT damage. This is Iharu’s entire identity. |
| 2nd | Ultimate | The DEF debuff is a force multiplier for your entire team’s physical damage. Level this second. |
| 3rd | Passive | Team Effect Hit Rate is already strong at base level. Upgrades improve secondary effects. |
| 4th | Normal Attack | Iharu is not a primary damage dealer. Only upgrade when you have surplus materials. |
Recommended Investment
Take Combat Skill to level 6-7 before slowing down. Ultimate to level 5 is sufficient through all current content. Iharu’s skill scaling per level is respectable for a 4★, so further investment is not wasted if you plan to use him long-term.
Material Efficiency: Iharu is one of the few 4★ units worth taking to high skill levels. Unlike Kafka (who gets replaced), Iharu stays relevant through endgame as a debuff support.
Awakening Priority
Iharu’s awakenings directly improve his two core functions: Shock reliability and DEF debuff uptime. They are well worth the investment.
Awakening Overview
| Awakening | Effect | Priority |
|---|---|---|
| A1 | Stat boost | 4th |
| A2 | Preemptive Intimidation — extends DEF debuff duration | 1st |
| A3 | Stat boost | 6th |
| A4 | Shock base chance +35% | 2nd |
| A5 | Stat boost | 5th |
| A6 | Shock DoT damage +60% | 3rd |
Optimal Path
| Step | Invest | Why |
|---|---|---|
| 1 | A2 | Preemptive Intimidation extends the DEF debuff duration significantly. More uptime = more team damage. This is the most impactful early awakening. |
| 2 | A4 | +35% Shock base chance transforms Iharu from inconsistent to reliable. Without this, enemies with debuff resistance can shrug off Shock. |
| 3 | A6 | +60% Shock DoT damage turns Iharu into a legitimate damage threat. The DoT ticks become significant over extended fights. |
| 4 | A1 | Cheap stat boost for early power. |
| 5 | A5 | Minor stat gains. Only when you have spare materials. |
| 6 | A3 | Lowest value awakening. Absolutely last priority. |
Awakening Summary
A2 >> A4 > A6 > A1 > A5 > A3Recommended stopping point: A2 minimum. A4 if you use Iharu in high-difficulty content. A6 if he is a core member of your main team.
Why A2 is first: The DEF debuff duration extension has the highest team-wide impact. Every physical damage dealer on your team benefits from enemies having lower DEF for more turns. This single awakening can increase your team’s effective DPS by 15-20%.
Best Team Compositions
Iharu’s role is debuff support. He enables Shock compositions and provides DEF down for physical damage dealers.
Team 1: Shock Core (Iharu + Reno)
| Role | Character | Why |
|---|---|---|
| Debuff Support | Iharu Furuhashi | Shock application, DEF debuff, team Effect Hit Rate |
| Hybrid DPS | Reno Ichikawa | Freeze/Shock hybrid, benefits from Iharu’s debuffs |
| Main DPS | Any Attacker | Capitalizes on debuffed enemies |
| Tank/Healer | Any Defender/Healer | Sustain for longer fights |
How it works: Iharu applies Shock with Combat Skill, then DEF debuff with Ultimate. Reno adds Freeze pressure on top. The main DPS attacks debuffed enemies for amplified damage.
Why it works: Shock and Freeze are both strong ailments. Having both on the field creates multiple threat vectors for the enemy. Iharu’s Effect Hit Rate passive helps Reno land Freeze more reliably.
When to use: Boss fights, high-difficulty stages, stage content.
Team 2: Wound + Shock Hybrid (Iharu + Aoi Kaguragi)
| Role | Character | Why |
|---|---|---|
| Debuff Support | Iharu Furuhashi | Shock + DEF debuff |
| Tank/Enabler | Aoi Kaguragi (Fruits of Diligence) | Wound state enabler, team protection |
| Main DPS | Any 5★ Attacker | Heavy damage dealer |
| Flex DPS | Any DPS unit | Secondary damage |
How it works: Aoi applies Wound state to enemies. Iharu adds Shock and DEF debuff on top. The main DPS attacks enemies with multiple active debuffs, triggering damage bonuses from gear and passives.
Why it works: Wound and Shock stack as separate debuffs. Many unipart sets and passives trigger “damage vs debuffed enemies” — having two active ailments doubles the trigger reliability.
When to use: Endgame content, stages with high-HP enemies.
Team 3: Full Lightning (Iharu + Mina Ashiro Core)
| Role | Character | Why |
|---|---|---|
| Debuff Support | Iharu Furuhashi | Shock application, team Effect Hit Rate |
| Main DPS | Mina Ashiro | Lightning-element heavy DPS |
| Sub DPS | Reno Ichikawa | Freeze/Shock hybrid, secondary Lightning |
| Tank | Any Defender | Survivability |
How it works: Iharu opens with Shock. Reno adds secondary debuffs. Mina Ashiro delivers the killing blow with Lightning-element damage. Iharu’s DEF debuff on Ultimate sets up Mina’s big damage windows.
Why it works: Mina Ashiro’s kit scales well with debuffed enemies. Iharu providing both Shock (Lightning DoT) and DEF debuff makes him the ideal Mina support.
When to use: Stages with Lightning weakness, single-target boss fights.
Team Synergy Notes
- Iharu’s passive (+7% Effect Hit Rate) is active from turn 1. This helps your entire team land opening debuffs more reliably.
- The DEF debuff from Iharu’s Ultimate is physical damage amp. If your team is mostly elemental damage, the value drops. Build Iharu with physical or hybrid damage dealers.
- Iharu does not compete for 5★ resources aggressively. He is one of the best 4★ investment targets in the game.
Final Team Advice: Iharu is the glue that holds Shock teams together. He does not need to be the star — he makes everyone around him better. This is the hallmark of a truly great support unit.
Looking for more Kaiju No. 8 The Game guides? Head to the Kaiju No. 8 The Game Guide Hub for character builds, weapon tier lists, and team comps in one place.
Frequently Asked Questions
Is Iharu Furuhashi worth building in Kaiju No. 8 The Game?
Absolutely. Iharu is a premier 4★ Supporter whose value goes far beyond his rarity. His passive — all allies' Effect Hit Rate +7% — is a team-wide buff that benefits every debuff-based composition. He also applies Shock (Lightning DoT) and DEF debuffs, making him a core enabler for Shock teams. He is meta-relevant even in endgame content.
What is the best weapon for Iharu Furuhashi?
AR-Cronus (5★ AR) is the best-in-slot weapon for Iharu, providing CRIT Rate that helps his team's overall damage output. AR-Boreas (5★ AR) is a strong alternative that also scales with CRIT Rate. For budget builds, any 4★ AR with Effect Hit Rate substats works — landing Shock reliably is more important than personal damage.
How does Iharu's Shock ailment work?
Shock is a Lightning-element Damage-over-Time (DoT) ailment. Iharu applies Shock with his Combat Skill, and the DoT ticks each turn for damage based on his ATK. His A4 awakening boosts the Shock base chance by 35%, making it far more reliable. The A6 awakening increases Shock DoT damage by 60%, transforming him into a serious damage contributor over time.
What unipart set is best for Iharu Furuhashi?
Spider-Type (ATK) is the perfect set for Iharu. It provides ATK and Effect Hit Rate — both stats he needs — and the set bonus deals extra damage against debuffed enemies. Iharu himself applies Shock and DEF debuffs, so he consistently triggers this bonus. Stat priority is ATK% > Effect Hit Rate > Elemental DMG.
What characters pair well with Iharu Furuhashi?
Iharu shines in Shock compositions. Reno Ichikawa (Freeze/Shock hybrid) is his best partner, creating dual-ailment pressure. Aoi Kaguragi (Wound enabler) works well since Iharu's DEF debuff increases physical damage. Any heavy DPS character who benefits from enemies having lower DEF or taking DoT damage fits perfectly with Iharu's debuff-focused kit.
About the author
Editor-in-Chief
Founder and Editor-in-Chief of gameguidesbox.com, began surfing the web in the late 19th century. Passionate about movies, coffee, gaming, and life itself. Favorite games include Titanfall 2, Baldur's Gate 3, Metro, PUBG, and CS2.
You may also like
Kaiju No. 8 The Game — Complete Guide Hub
Your ultimate resource for Kaiju No. 8 The Game. Find character guides, weapon tier lists, uniparts database, beginner reroll tips, squad building strategies, and boss fight walkthroughs — all in one place.
Aoi Kaguragi (Fruits of Diligence) Best Build Guide - Kaiju No. 8 The Game
Build the ultimate Aoi Kaguragi (Fruits of Diligence) in Kaiju No. 8 The Game. Full guide on uniparts, weapons, awakening priority, and Wound-enabling team comps for this S+ tier 5★ Defender.
Kaiju No. 8 The Game Beginner's Guide: Tips, Systems, and Progression
New to Kaiju No. 8 The Game? This beginner's guide covers everything you need to know — combat systems, team building, daily routine, resource management, and common mistakes to avoid.
Comments