State of Survival: How to Unlock and Upgrade Ichiban Kasuga

To recruit Special Agent Ichiban Kasuga in State of Survival, spend event recruitment badges in the limited-time crossover interface. To maximize his value, invest his duplicate fragments into full star promotions rather than spreading resources across incomplete ranks, then slot him onto your primary attack march to boost your offensive rally stats.

How to Unlock and Recruit Ichiban Kasuga

Ichiban Kasuga functions under the standalone Special Agent companion system. Unlike standard tavern heroes or resonance leaders, Special Agents use separate recruitment crates, dedicated shard pools, and distinct upgrade materials.

Save recruitment tokens until you have enough to reach guaranteed draw milestone crates. Pulling intermittently during a crossover risks ending the event without the base card or the fragments needed for key performance thresholds.

Star Rank Promotion and Stat Thresholds

Upgrading Ichiban's star rating scales his march multipliers and activates higher-tier combat attributes. Each star promotion demands an increasing quantity of character-specific fragments.

Do not leave Ichiban mid-tier when the crossover concludes. Incomplete fragment investments provide zero stat value until the entire promotion confirms. If you cannot reach the next major rank before the event window closes, check whether universal Special Agent fragments will apply to him before spending additional Bio-Caps.

• 1-Star (Base Unlock): Provides foundational troop stats for your marches.
• 2-Star Promotion: Unlocks his first combat skill slot.
• 3-Star Threshold: Grants passive march buffs that benefit deployments.
• 4-Star to 5-Star (Peak Rank): Unlocks maximum rally lethality and health pools.

Skill Priorities and March Allocation

Special Agents do not occupy a standard march hero slot. Ichiban Kasuga provides bonus stats alongside your existing march leaders without replacing your infantry, hunter, or rider commanders.

Skill Leveling Priority

When spending agent skill manuals, prioritize combat stats over utility:

1. Lethality and Attack Buffs: Raise skills that directly boost troop lethality and attack in both solo marches and alliance rallies.
2. Infantry Damage Reduction: Invest in defensive passives that reduce incoming burst damage on front-line infantry to sustain extended bunker battles.
3. Secondary Utility: Delay spending on PvE damage modifiers or march speed until your main combat passives are maxed.

Formation Setup

Slot Ichiban into your primary offensive preset for events like Reservoir Raid, Capital Clash, and State vs State (SVS). His stat distribution favors attacking pressure over settlement defense. If you lead alliance rallies, assigning Ichiban to your main offensive preset ensures that all joining rally members benefit from his passive stat aura.

Whenever you promote Ichiban to a new star rank or upgrade his skills, re-save your automated march presets immediately to apply his updated stats to upcoming battles.

Resource Budgeting

Collaboration events operate on strict schedules with uncertain rerun windows. If you are a free-to-play or low-spending player, compare the Bio-Cap cost of recruiting Ichiban against other core progression priorities, such as Chief Gear materials or Behemoth enhancements. A base 1-Star or 2-Star unlock provides immediate companion utility, but higher-tier competitive lethality requires a full commitment to his banner milestone crates. If your inventory cannot guarantee a meaningful star threshold before the event ends, reserve your Bio-Caps for permanent base upgrades.