Kaiju No. 8 The Game: Soshiro Hoshina Hoshina-Style Sword-Slay Technique Best Build Guide
Dominate wave content with Soshiro Hoshina's snowball mechanic. Complete build guide with Lizard-Type Uniparts, SW-Susanoo weapon, Fierce state rotation, and top team compositions.
Table of Contents
- Character Overview
- Soshiro Hoshina Stats and Role
- Fierce State and Snowball Mechanics
- Best Uniparts Setup for Soshiro
- Best Weapon Choice
- Skill Upgrade Priority
- Awakening Priority
- Best Team Compositions
- Wave Clear vs Boss Performance
- FAQ
Character Overview
Soshiro Hoshina — Hoshina-Style Sword-Slay Technique — is a 5★ Slash Attacker obtained through Gacha. He ranks A-tier and excels in content where enemies come in waves.
As the Vice-Captain of the Defense Force’s 1st Division and master of the Hoshina-style swordsmanship, Soshiro is a frontline combatant who grows stronger with every enemy he defeats. His snowball mechanic makes him one of the most satisfying characters to play in wave-clear content.

Basic Information
| Stat | Value |
|---|---|
| Rarity | 5★ |
| Role | Slash Attacker |
| Obtain | Gacha Pull |
| Tier | A |
| Weapon Type | Twin Swords / Ax |
| Damage Type | Slash |
| Passive | On kill: ATK +11%, CRIT Rate +11%, CRIT DMG +16%. Fierce state on Combat Skill. |
Strengths and Weaknesses
Strengths:
- Snowball mechanic can stack to monstrous levels in wave content
- Base CRIT Rate +11% and CRIT DMG +16% without any gear
- Fierce state dramatically boosts combat effectiveness
- Multiple strong weapon options
- Excellent in wave-clear and farming content
Weaknesses:
- Struggles in single-target boss fights
- Snowball resets on stage completion — no carryover
- Needs kills to function — useless against invulnerable adds phases
- Requires specific team support for endgame content
- Awakening data is currently incomplete — general investment advice only
Soshiro Hoshina Stats and Role
Soshiro is a wave-clear specialist who snowballs out of control when conditions are right. His base stats already include significant CRIT Rate and CRIT DMG, making him easier to gear than most attackers.
Stat Scaling Priority
| Priority | Stat | Why |
|---|---|---|
| 1 | ATK% | All damage scales from ATK. Snowball stacks multiply this further. |
| 2 | CRIT DMG | Base 16% CRIT DMG from passive. Stack more to maximize snowball value. |
| 3 | CRIT Rate | Base 11% from passive. More CRIT Rate means more consistent snowballs. |
| 4 | SPD | Helps Soshiro act before enemies to secure first kill. |
| 5 | Effect Hit Rate | Low priority — Soshiro doesn’t rely on debuffs. |
Level 60 Base Stats (Estimated)
| Base Stat | Value |
|---|---|
| HP | 8,500 |
| ATK | 2,000 |
| DEF | 1,020 |
| SPD | 112 |
| CRIT Rate | 11% (base) + 11% (passive) = 22% |
| CRIT DMG | 50% (base) + 16% (passive) = 66% |
Fierce State and Snowball Mechanics
Soshiro has two core mechanics that work together to create his unique playstyle.
Fierce State
When Soshiro uses his Combat Skill, he enters Fierce state.
| Aspect | Detail |
|---|---|
| Trigger | Combat Skill activation |
| Duration | 2 actions (base), extendable |
| Effects | Increased ATK, increased attack SPD, enhanced skills |
| Cooldown | 3 turns after Fierce state ends |
While in Fierce state, Soshiro’s attacks hit harder and faster. The goal is to enter Fierce state right before a wave spawns, then use the enhanced damage to secure kills and feed your snowball.
Snowball Mechanic
Every time Soshiro defeats a Kaiju, he gains stacking buffs:
| Stack | ATK Bonus | CRIT Rate Bonus | CRIT DMG Bonus |
|---|---|---|---|
| 1 | +11% | +11% | +16% |
| 2 | +22% | +22% | +32% |
| 3 | +33% | +33% | +48% |
| 4 | +44% | +44% | +64% |
| 5 | +55% | +55% | +80% |
Stacks cap at 5. They persist through waves within the same stage but reset when the stage ends.
Optimal Rotation
- Pre-wave → Use Combat Skill to enter Fierce state
- Wave spawns → Basic Attack the weakest enemy (secure first kill)
- Snowball starts → Chain kills through remaining enemies
- Elite/Boss appears → Use Ultimate with full snowball stacks
- Reset → Use Combat Skill again when Fierce state ends
Key Tip
Prioritize killing the weakest enemy first to start your snowball. Attacking the strongest enemy first risks not getting the kill, which means no stack. Let your teammates soften enemies, then Soshiro finishes them.
Best Uniparts Setup for Soshiro
Soshiro has two strong build paths: Lizard-Type for general content and Wolf-Type for AoE wave clearing.
Build 1: Lizard-Type (ATK) — Best in Slot

Lizard-Type boosts ATK and CRIT Rate while amplifying damage before Ultimate. This synergizes perfectly with Soshiro’s base CRIT stats and snowball mechanic.
| Slot | Main Stat | Substats Priority | Set Bonus |
|---|---|---|---|
| Head | ATK% | ATK% > CRIT DMG > CRIT Rate > SPD | +ATK% |
| Chest | CRIT DMG | CRIT DMG > ATK% > CRIT Rate > SPD | +ATK% |
| Gloves | ATK% | ATK% > CRIT DMG > CRIT Rate > SPD | +ATK% |
| Boots | ATK% or SPD | ATK% > SPD > CRIT DMG > CRIT Rate | +ATK% |
| Orb | ATK% | ATK% > CRIT DMG > CRIT Rate > HP% | +CRIT Rate |
| Charm | CRIT DMG | CRIT DMG > ATK% > CRIT Rate > HP% | +CRIT Rate |
Why Lizard-Type works: Soshiro’s base CRIT Rate (22% with passive) means you need less CRIT Rate from gear. This lets you focus on CRIT DMG, where Lizard-Type’s set bonuses shine. The pre-Ultimate DMG bonus is excellent for when you Ultimate at 5 snowball stacks.
Build 2: Wolf-Type (ATK) — AoE Wave Clear

Wolf-Type boosts AoE damage and gives bonus damage when acting before the target. Soshiro’s high base SPD makes the speed advantage condition easy to meet.
| Slot | Main Stat | Substats Priority | Set Bonus |
|---|---|---|---|
| Head | ATK% | ATK% > SPD > CRIT DMG > CRIT Rate | +ATK% |
| Chest | CRIT DMG | CRIT DMG > ATK% > SPD > CRIT Rate | +ATK% |
| Gloves | ATK% | ATK% > SPD > CRIT DMG > CRIT Rate | +ATK% |
| Boots | SPD | SPD > ATK% > CRIT DMG > CRIT Rate | +ATK% |
| Orb | ATK% | ATK% > SPD > CRIT DMG > CRIT Rate | +AoE DMG |
| Charm | ATK% | ATK% > SPD > CRIT DMG > CRIT Rate | +AoE DMG |
When to use Wolf-Type: In stages with 4+ enemies per wave where Soshiro can act first and start snowballing immediately.
Build 3: Fungal-Type
Fungal-Type (ATK) is a third option for pure Ultimate burst. It’s less consistent than Lizard-Type but provides higher peak damage.
Best Weapon Choice
Soshiro can equip both Twin Swords and Axes. His best weapon depends on whether you prioritize CRIT DMG or SPD.
Primary: SW-Susanoo (5★ Twin Swords) — Best in Slot
| Stat | Value |
|---|---|
| Weapon Type | Twin Swords |
| Base ATK | 1,380 |
| CRIT DMG | +48% |
| Passive | Increases CRIT DMG by 48%. |
| Recommended For | All content |
Why SW-Susanoo is best: 48% CRIT DMG on a weapon is massive. Combined with Soshiro’s base 66% CRIT DMG (50% base + 16% passive), this brings him to 114% CRIT DMG before any Unipart substats. Every snowball stack makes this even more valuable.
Secondary: SW-2033 (5★ Twin Swords) — SPD Build
| Stat | Value |
|---|---|
| Weapon Type | Twin Swords |
| Base ATK | 1,350 |
| SPD | +12 |
| Passive | SPD increase with follow-up focus. |
| Recommended For | Speed-focused builds |
SW-2033 trades CRIT DMG for speed. The follow-up attack synergy helps Soshiro secure kills even when he doesn’t one-shot an enemy. Use this if you value Fierce state uptime over burst damage.
Alternative Weapon Options
| Weapon | Rarity | Type | Why Use It |
|---|---|---|---|
| SW-Ameno Torifune | 5★ | Twin Swords | CRIT DMG alternative. Slightly less than Susanoo. |
| SW-Takeminakata | 5★ | Twin Swords | Slash DMG bonus. Good if you lack CRIT DMG. |
| Ax-0087 | 5★ | Ax | Same CRIT DMG +48% as Susanoo. Option if you pulled Ax instead. |
| SW-Ihcatiamak | 5★ | Twin Swords | Effect Hit Rate. Not recommended — Soshiro doesn’t need EHR. |
Skill Upgrade Priority
Priority Order
| Priority | Skill | Why Level First |
|---|---|---|
| 1 | Passive (Hoshina-Style) | Increases snowball stack cap and per-stack values. Core to his identity. |
| 2 | Combat Skill (Fierce Slash) | Triggers Fierce state. Higher level = stronger Fierce state. |
| 3 | Ultimate (Sword-Slay) | Strong burst. Level when Passive and Combat Skill are adequate. |
| 4 | Basic Attack | Lowest priority. |
Recommended Skill Levels
| Content Type | Passive | Combat Skill | Ultimate | Basic Attack |
|---|---|---|---|---|
| Early Game (1-40) | 4 | 3 | 2 | 1 |
| Mid Game (41-60) | 6 | 6 | 4 | 3 |
| End Game (60+) | 10 | 9 | 7 | 5 |
Awakening Priority
Soshiro’s Awakening data is currently incomplete — specific effects at each Awakening level have not been fully documented by the community.
General Awakening Priority (Estimated)
Based on his kit design, the expected priority order is:
| Priority | Awakening | Expected Effect | Why |
|---|---|---|---|
| 1 | A4 | Combat Skill enhancement or Fierce state improvement | Core mechanic upgrade is usually at A4. |
| 2 | A6 | Snowball stack cap increase or Ultimate bonus | Capstone Awakening for maximum potential. |
| 3 | A1 | CRIT Rate or CRIT DMG increase | Stat boost that feeds his snowball. |
| 4 | A2 | SPD or ATK increase | General stat boost. |
| 5 | A3 | Skill cooldown reduction | Quality-of-life improvement. |
| 6 | A5 | Ultimate Gauge gain on kill | Synergizes with wave-clear focus. |
Investment Strategy
- F2P: Pull Soshiro if you like his playstyle. Invest up to A1 for the stat boost.
- Dolphin: A4 for the expected core mechanic upgrade.
- Whale: A6 for maximum snowball potential.
Note: The community is still gathering data on Soshiro’s exact Awakening effects. Check the latest patch notes for confirmation before spending resources.
Best Team Compositions
Soshiro needs teams that enable his snowball. He wants enemies to kill, buffers to boost his damage, and minimal competition for kills.
Team 1: Snowball Express (Recommended)
| Slot | Character | Role | Why |
|---|---|---|---|
| Main DPS | Soshiro Hoshina | Slash Attacker | Our build subject |
| Support | Haruichi Izumo | Shot Supporter | ATK buff + SP regen. Best teammate for Soshiro. |
| Tank | Kikoru Shinomiya | Slash Attacker | Secondary damage, DEF debuff |
| Healer | Aoi Kaguya | Healer/Support | Sustain for extended fights |
Strategy: Haruichi feeds Soshiro ATK buffs and SP. Kikoru debuffs enemies so Soshiro can secure kills faster. Aoi keeps everyone alive while Soshiro snowballs. Kikoru can also take kills if Soshiro’s snowball is already maxed — flexibility matters.
Team 2: Double Slash
| Slot | Character | Role | Why |
|---|---|---|---|
| Main DPS | Soshiro Hoshina | Slash Attacker | Snowball carry |
| Sub DPS | Kikoru Shinomiya | Slash Attacker | Debuff + secondary damage |
| Support | Haruichi Izumo | Shot Supporter | Universal buffer |
| Flex | Mina Ashiro | Shot Attacker | Boss insurance — if Soshiro can’t snowball, Mina handles the boss |
Strategy: Double Slash composition with Haruichi support. If the stage has waves followed by a boss, Soshiro handles waves (snowball) and Mina handles the boss. This covers Soshiro’s weakness against single-target encounters.
Team 3: Budget Wave Clear
| Slot | Character | Role | Why |
|---|---|---|---|
| Main DPS | Soshiro Hoshina | Slash Attacker | Solo carry |
| Support | Any Buffer | Buffer | Pick your best ATK buffer |
| Tank | Any Tank | Tank | Pick your best DEF unit |
| Healer | Any Healer | Healer | Pick your best healer |
Strategy: Soshiro carries the wave content. The other three slots are flexible — just bring survivability. This works for all farming content and early-to-mid game progression.
Wave Clear vs Boss Performance
Wave Clear (Soshiro’s Strength)
Against 3+ enemies per wave, Soshiro is one of the best characters in the game.
| Stage Type | Performance | Rating |
|---|---|---|
| 3 enemies/wave | Can maintain 5 stacks consistently | A+ |
| 4+ enemies/wave | Overkills snowball — stacks cap quickly | S |
| Endless waves | Maximum potential. Infinite snowball. | S |
Boss Fight (Soshiro’s Weakness)
Against single targets, Soshiro falls behind dedicated boss killers.
| Boss Type | Performance | Rating |
|---|---|---|
| Solo boss (no adds) | No snowball possible. Base stats only. | C |
| Boss with adds | Snowball on adds, burst on boss | A |
| Boss with invulnerable adds | Can’t kill adds. Cannot snowball. | D |
Verdict
Soshiro is a specialist, not a generalist. Use him in wave-clear content (farming, event stages, story) and bench him for pure boss fights. His slot efficiency is unmatched in his niche but below average outside of it.
Frequently Asked Questions
Is Soshiro Hoshina good in Kaiju No. 8 The Game?
Yes, Soshiro is a solid A-tier Slash Attacker with a unique snowball mechanic. His kit rewards aggressive play — each kill grants ATK +11%, CRIT Rate +11%, and CRIT DMG +16%. In wave-clear content where he can chain kills, Soshiro outperforms many higher-tier units. In single-target boss fights, he struggles to maintain his stacks and falls behind dedicated boss killers.
What is the best Unipart set for Soshiro Hoshina?
Lizard-Type (ATK) is the best set for Soshiro. It provides ATK and CRIT Rate while boosting damage before Ultimate. Since Soshiro already has base CRIT Rate and CRIT DMG from his passive, the Lizard-Type's CRIT synergy makes his snowball even more consistent. Wolf-Type is a strong alternative for AoE content where speed advantage and wave clearing are the priority.
Which weapon should I use on Soshiro Hoshina?
SW-Susanoo (5★ Twin Swords) is the best-in-slot weapon for Soshiro. It provides CRIT DMG +48%, which synergizes perfectly with his base CRIT stats and snowball mechanic. SW-2033 (5★ Twin Swords) is a strong alternative for SPD-focused builds where you want to maximize Fierce state uptime.
How does Soshiro's Fierce state work?
Soshiro enters Fierce state when he uses his Combat Skill. While in Fierce state, his damage and attack speed are significantly increased. The state lasts for a fixed number of actions or turns. The key to maximizing Soshiro is to enter Fierce state before a wave of enemies arrives, then snowball through kills to extend your advantage.
What is the best team composition for Soshiro?
Soshiro needs buffers to reach his full potential. Haruichi Izumo is his best teammate — the ATK buff and SP regen help Soshiro maintain Fierce state. Pair Soshiro with a wave-clear support and a healer for general content. Avoid pairing him with other kill-dependent characters who compete for the same kills.
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