Esper Zero
零
Esper Zero is the protagonist of Neverness to Everness, a mysterious appraiser at the Eibon Antique Shop who wields the power of Cosmos. As an S-Rank Solid Arc user, Zero excels as a quick-swap Sub-DPS and is widely regarded as the strongest Esper Cycle trigger in the game. Zero's kit revolves around rapid Cosmos DMG output and team energy generation, making them invaluable in Blossom-based team compositions.
Skills
Normal Attack
Appraisal — Performs up to 5 consecutive sword strikes dealing Cosmos DMG. Charge Attack (Severance) delivers a powerful thrust. Flash of Inspiration can be triggered during certain combos.
Skill
Appraise and Engrave — Unleashes 3 powerful strikes followed by an Esper Cannon blast that deals massive Cosmos DMG in a wide area. Core ability for generating Esper Cycle triggers.
Ultimate
Divide by Zero — Channels pure Cosmos energy to rain down devastating blows across a large area, dealing multiple instances of Cosmos DMG. Triggers Rift Blossom on hit.
Passive
Appraiser — Restores HP equal to 50% of ATK when gaining Ultimate Energy. Anomaly Perception: Divide by Zero DMG increased by 25% when triggered.
Best Weapons
Sub Stat: CRIT Rate 22%
Super Vortex — Redirect Skill and Ultimate Cosmos DMG +30%. After using Redirect, Cycle Intensity +36 for 15 seconds. Repeated triggers refresh the duration.
How to Get: Gacha — Weapon Banner
Sub Stat: Charge Efficiency 33%
Eclipse — ATK +30%. Unlock Arc: Eclipse creates a 40-second Eclipse state. During Eclipse, each defeated enemy restores 6 Ultimate Energy, up to 5 times. Cooldown: 300 seconds.
How to Get: Free — Complete hidden Eclipse quest (find Eclipse at 4 locations on a sunny morning after clearing prologue, then return to BaC HQ)
Sub Stat: HP% 25%
Picture Frame — When HP is above 50%, ATK +20%. When HP is below 50%, DEF +20%.
How to Get: Available through standard progression
Best Modules
2-Piece: Cosmos DMG +10%
4-Piece: After using Ultimate, ignores 25% DEF for 20 seconds.
Modules infused with fading starlight, providing powerful amplification for Cosmos-type damage dealers. The premier Cartridge set for Hotori, synergizing perfectly with her Time Stop Ultimate burst window. Also an excellent choice for Esper Zero and Chiz who rely on Cosmos DMG output.
2-Piece: Charge Efficiency +12%
4-Piece: After using Ultimate, all party members gain ATK +15% for 10 seconds. This effect can trigger once every 15 seconds.
An adorable yet powerful support Cartridge set featuring a spiky hedgehog motif. Speedy Hedgehog is the go-to set for support characters who need high Charge Efficiency for frequent Ultimate usage while providing team-wide ATK buffs. Universally strong on Haniel, Sakiri, and Esper Zero for quick-swap support roles.
Build Notes
Focus on ATK% and Crit Rate substats. Signature weapon Day Off (free quest weapon, ATK 512, Charge Efficiency 33%) provides excellent synergy. Best Cartridge: Lost Radiance (Cosmos DMG +10%, post-Ultimate ignores 25% DEF). Alternative: Speedy Hedgehog. Best team: Zero + Nanally + Sakiri + Haniel.
Team Compositions
Characters that synergize well with Esper Zero based on shared Esper type or faction: