Haruichi Izumo (Calculated Choice) is a 5-Star character in Kaiju No. 8 The Game (K8 The Game). Learn about skill upgrade priority, best build, and team comps.
Table of Contents
Basic Info & Tier for Haruichi Izumo (Calculated Choice)
![]() | Rarity | 5★ |
|---|---|---|
| Type | Shot | |
| Inflicted Ailment | - | |
| Role | Supporter | |
| How to Get | Gacha |
Haruichi Izumo [Calculated Choice] is a Support who excels at buffing his Battle Buddy. In addition to providing SPD+ for a single ally along with increased Combat Skill DMG dealt and CRIT DMG UP, he can grant a wide range of offensive buffs, including All Elemental DMG Dealt UP, ATK increase, and ST Attack/Blast Attack DMG dealt increase.
Tier & Rating
| Overall Tier | Reroll Tier |
|---|---|
![]() ▶ Character Tier List | ![]() ▶ Reroll Tier List |
User Score
Pros & Cons for Haruichi Izumo (Calculated Choice)
Shot Support That Buffs His Battle Buddy
Haruichi Izumo is a 5★ Shot Support whose Ultimate delivers an AoE attack with a guaranteed Critical Hit. He provides both offensive and SPD buffs, making him highly effective at strengthening his Battle Buddy.
Squad Setup GuideProvides SPD and Multiple Buffs
With his Combat Skill, Haruichi can grant a single ally Combat Skill DMG dealt UP, SPD increase, and CRIT DMG UP through True Potential, allowing him to consistently support allies with both speed and offensive buffs.
Best Paired With an Attacker
Haruichi excels at supporting his Battle Buddy. In addition to his core buffs, after using his Combat Skill he can grant his Battle Buddy ATK increase + ST Attack/Blast Attack DMG dealt increase, along with All Elemental DMG Dealt UP through Assistance at the start of battle or via his Ultimate, giving access to a wide range of offensive enhancements. Because of this, he performs best when paired with a strong Attacker in your squad.
True Potential CRIT DMG Scales
True Potential increases CRIT DMG based on Haruichi’s own CRIT DMG stat, making it important to build his CRIT DMG. Clarity, which he gains when he or his Battle Buddy uses a Combat Skill, boosts his CRIT DMG, and at 3 stacks, all stacks can be consumed to gain SP+1.
| Note! | True Potential cannot be applied to Haruichi himself. |
|---|
Aim for A2 First
Since A1 adds CRIT Rate UP and DMG dealt UP to the True Potential effect, and A2 increases his own CRIT DMG, prioritize reaching A2 first to improve his support performance. A4 expands the All Elemental DMG Dealt buff to all allies, while A6 extends the duration of key buffs for even stronger support.
Best Unipart for Haruichi Izumo (Calculated Choice)
Recommended Unipart
| Uniparts | Reasons |
|---|---|
Fungal-Type | - Gains CRIT DMG UP through Set Effect - Increasing his own CRIT DMG also boosts the CRIT DMG granted to allies via True Potential |
Recommended Stats by Part
| Arms | Body | Legs |
|---|---|---|
| ATK | CRIT DMG | SPD |
Best Skill Enhance Priority for Haruichi Izumo (Calculated Choice)
Recommended Skill Upgrade Priority
| Normal Attack | ★・・・・ |
|---|---|
| Combat Skill | ★★★★★ |
| Ultimate | ★★★★★ |
| Follow-Up Skill | ★・・・・ |
| Passive Skill | ★★★★・ |
Normal Attack
| Dexterous Snap-Shot | ||
|---|---|---|
| - Deals Shot DMG equal to 55% of this unit's ATK to a single Kaiju. | ||
| Ult Gauge Charge | Attack Type | Attack Range |
| 60 | Shot | ST Attack |
Combat Skill
| Suppressive Stance | |||
|---|---|---|---|
| - Applies Combat Skill DMG dealt +27.5% (1 turn(s)), SPD +7.8% (1 turn(s)), and True Potential (1 turn(s)) to a single ally. - True Potential does not apply to this unit. -True Potential: Increases target's CRIT DMG. The amount of CRIT DMG increase is equal to 32% of this unit's CRIT DMG upon application. | |||
| SP Cost | Ult Gauge Charge | Attack Type | Attack Range |
| 1 | 90 | Support | |
Ultimate
| Manifold Arrow Salvo | ||
|---|---|---|
| - This attack's CRIT Rate +100%. - Deals Shot DMG equal to 69% of this unit's ATK to all Kaiju. - After attacking, applies Assistance (3 turn(s)) to this unit. - Assistance: 1. Battle buddy's All-Attribute DMG dealt +19.2%. 2. After this unit's turn arrives, turn duration of Assistance -1. | ||
| Ult Gauge Limit | Attack Type | Attack Range |
| 300 | Shot | AoE Attack |
Follow-Up Skill
| Focused True-Shot | ||
|---|---|---|
| - Deals Shot DMG equal to 77% of this unit's ATK to a single Kaiju. | ||
| Ult Gauge Charge | Attack Type | Attack Range |
| 2月28日 | Shot | ST Attack |
Passive Skills
Universal Support
| Effect |
|---|
| - After this unit or battle buddy activates Combat Skill, applies 1 stack(s) of Clarity to this unit. Max 3 stack(s). - Clarity: This unit's CRIT DMG +10%. - When Clarity is at its max stacks, consumes all Clarity and SP +1. - After activating Combat Skill, applies ATK +26.4% (2 turn(s)) to battle buddy. |
Additional Passive Skills
| State of Immersion |
|---|
| Required Character Lv. Limit: Lv. 40 - After activating Combat Skill, applies ST Attack and Blast Attack DMG dealt +30% (1 turn(s)) to battle buddy. |
| Composed Spirit |
| Required Character Lv. Limit: Lv. 60 - At the start of battle, applies Assistance (3 turn(s)) that is the same as Ultimate's to this unit. |
| Unwavering Rapid-Fire |
| Required Character Lv. Limit: Lv. 80 - After activating Normal Attack, advances this unit's next Action Order by 50%. Activates 1 time(s) every 2 turn(s). |
Ascension Priority & Effects for Haruichi Izumo (Calculated Choice)
| A1 | Recommendation: ★★★★・ Flawless Arrangements - True Potential: In addition, target's CRIT Rate +20% and DMG dealt +20%. |
|---|---|
| A2 | Recommendation: ★★★★★ Keen Suppression - After activating Ultimate, applies CRIT DMG +80% (3 turns) to this unit. |
| A3 | Recommendation: ★★★・・ Superior Judgment - Normal Attack, Passive Skill Lv. +2. - Normal Attack, Passive Skill max Lv. +2. |
| A4 | Recommendation: ★★★★★ Essence of Archery - Target of the All-Attribute DMG dealt buff from Assistance becomes all allies. |
| A5 | Recommendation: ★★★・・ The Path Discovered - Combat Skill, Ultimate, Follow-Up Skill Lv. +2. - Combat Skill, Ultimate, Follow-Up Skill max Lv. +2. |
| A6 | Recommendation: ★★★★★ Distinguished Choice - Turn duration of DMG dealt and SPD buffs, True Potential applied by Combat Skill +1. |
Haruichi’s support capabilities improve further through Ascension. A1 enhances True Potential with CRIT Rate UP and DMG dealt UP, A2 increases his CRIT DMG after using his Ultimate, A4 expands the All Elemental DMG Dealt buff to all allies, and A6 extends the duration of Combat Skill buffs such as DMG dealt, SPD, and True Potential.
Haruichi Izumo Profile
Profile

| Affiliation | Second Division |
|---|---|
| Birthday | 10/14 |
| Height | 5'10 (179 cm) |
| Likes | Do-it-yourself carpentry, solo camping, classical music, snack foods |
Introduction
Voice Actor
| VA | Keisuke Kawamoto |
|---|---|
| Notable Roles | - RobiHachi (Hachi Kita) - CYBORG009 CALL OF JUSTICE(Joe Shimamura (009)) - Kiss Him, Not Me (Nozomu Nanashima) |
Haruichi Izumo is voiced by Keisuke Kawamoto.
Kaiju 8 The Game Related Guides

Character Guides
| All Characters List | Voice Actor List |
| Free 5★ Character to Pick | Best 4★ Characters |
| Completion Tracker Tool |