guides Kaiju No. 8 The Game

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.

Soshiro Hoshina in Fierce state wielding twin swords with slashing effects

Table of Contents

  1. Character Overview
  2. Soshiro Hoshina Stats and Role
  3. Fierce State and Snowball Mechanics
  4. Best Uniparts Setup for Soshiro
  5. Best Weapon Choice
  6. Skill Upgrade Priority
  7. Awakening Priority
  8. Best Team Compositions
  9. Wave Clear vs Boss Performance
  10. 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.

Soshiro Hoshina full art

Basic Information

StatValue
Rarity5★
RoleSlash Attacker
ObtainGacha Pull
TierA
Weapon TypeTwin Swords / Ax
Damage TypeSlash
PassiveOn 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

PriorityStatWhy
1ATK%All damage scales from ATK. Snowball stacks multiply this further.
2CRIT DMGBase 16% CRIT DMG from passive. Stack more to maximize snowball value.
3CRIT RateBase 11% from passive. More CRIT Rate means more consistent snowballs.
4SPDHelps Soshiro act before enemies to secure first kill.
5Effect Hit RateLow priority — Soshiro doesn’t rely on debuffs.

Level 60 Base Stats (Estimated)

Base StatValue
HP8,500
ATK2,000
DEF1,020
SPD112
CRIT Rate11% (base) + 11% (passive) = 22%
CRIT DMG50% (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.

AspectDetail
TriggerCombat Skill activation
Duration2 actions (base), extendable
EffectsIncreased ATK, increased attack SPD, enhanced skills
Cooldown3 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:

StackATK BonusCRIT Rate BonusCRIT 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

  1. Pre-wave → Use Combat Skill to enter Fierce state
  2. Wave spawns → Basic Attack the weakest enemy (secure first kill)
  3. Snowball starts → Chain kills through remaining enemies
  4. Elite/Boss appears → Use Ultimate with full snowball stacks
  5. 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

Lizard-Type boosts ATK and CRIT Rate while amplifying damage before Ultimate. This synergizes perfectly with Soshiro’s base CRIT stats and snowball mechanic.

SlotMain StatSubstats PrioritySet Bonus
HeadATK%ATK% > CRIT DMG > CRIT Rate > SPD+ATK%
ChestCRIT DMGCRIT DMG > ATK% > CRIT Rate > SPD+ATK%
GlovesATK%ATK% > CRIT DMG > CRIT Rate > SPD+ATK%
BootsATK% or SPDATK% > SPD > CRIT DMG > CRIT Rate+ATK%
OrbATK%ATK% > CRIT DMG > CRIT Rate > HP%+CRIT Rate
CharmCRIT DMGCRIT 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

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.

SlotMain StatSubstats PrioritySet Bonus
HeadATK%ATK% > SPD > CRIT DMG > CRIT Rate+ATK%
ChestCRIT DMGCRIT DMG > ATK% > SPD > CRIT Rate+ATK%
GlovesATK%ATK% > SPD > CRIT DMG > CRIT Rate+ATK%
BootsSPDSPD > ATK% > CRIT DMG > CRIT Rate+ATK%
OrbATK%ATK% > SPD > CRIT DMG > CRIT Rate+AoE DMG
CharmATK%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

StatValue
Weapon TypeTwin Swords
Base ATK1,380
CRIT DMG+48%
PassiveIncreases CRIT DMG by 48%.
Recommended ForAll 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

StatValue
Weapon TypeTwin Swords
Base ATK1,350
SPD+12
PassiveSPD increase with follow-up focus.
Recommended ForSpeed-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

WeaponRarityTypeWhy Use It
SW-Ameno Torifune5★Twin SwordsCRIT DMG alternative. Slightly less than Susanoo.
SW-Takeminakata5★Twin SwordsSlash DMG bonus. Good if you lack CRIT DMG.
Ax-00875★AxSame CRIT DMG +48% as Susanoo. Option if you pulled Ax instead.
SW-Ihcatiamak5★Twin SwordsEffect Hit Rate. Not recommended — Soshiro doesn’t need EHR.

Skill Upgrade Priority

Priority Order

PrioritySkillWhy Level First
1Passive (Hoshina-Style)Increases snowball stack cap and per-stack values. Core to his identity.
2Combat Skill (Fierce Slash)Triggers Fierce state. Higher level = stronger Fierce state.
3Ultimate (Sword-Slay)Strong burst. Level when Passive and Combat Skill are adequate.
4Basic AttackLowest priority.
Content TypePassiveCombat SkillUltimateBasic Attack
Early Game (1-40)4321
Mid Game (41-60)6643
End Game (60+)10975

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:

PriorityAwakeningExpected EffectWhy
1A4Combat Skill enhancement or Fierce state improvementCore mechanic upgrade is usually at A4.
2A6Snowball stack cap increase or Ultimate bonusCapstone Awakening for maximum potential.
3A1CRIT Rate or CRIT DMG increaseStat boost that feeds his snowball.
4A2SPD or ATK increaseGeneral stat boost.
5A3Skill cooldown reductionQuality-of-life improvement.
6A5Ultimate Gauge gain on killSynergizes 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.

SlotCharacterRoleWhy
Main DPSSoshiro HoshinaSlash AttackerOur build subject
SupportHaruichi IzumoShot SupporterATK buff + SP regen. Best teammate for Soshiro.
TankKikoru ShinomiyaSlash AttackerSecondary damage, DEF debuff
HealerAoi KaguyaHealer/SupportSustain 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

SlotCharacterRoleWhy
Main DPSSoshiro HoshinaSlash AttackerSnowball carry
Sub DPSKikoru ShinomiyaSlash AttackerDebuff + secondary damage
SupportHaruichi IzumoShot SupporterUniversal buffer
FlexMina AshiroShot AttackerBoss 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

SlotCharacterRoleWhy
Main DPSSoshiro HoshinaSlash AttackerSolo carry
SupportAny BufferBufferPick your best ATK buffer
TankAny TankTankPick your best DEF unit
HealerAny HealerHealerPick 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 TypePerformanceRating
3 enemies/waveCan maintain 5 stacks consistentlyA+
4+ enemies/waveOverkills snowball — stacks cap quicklyS
Endless wavesMaximum potential. Infinite snowball.S

Boss Fight (Soshiro’s Weakness)

Against single targets, Soshiro falls behind dedicated boss killers.

Boss TypePerformanceRating
Solo boss (no adds)No snowball possible. Base stats only.C
Boss with addsSnowball on adds, burst on bossA
Boss with invulnerable addsCan’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.

About the author

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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.

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