Yenisei
Yenisei is a 5★ Star Arcanist in Reverse: 1999. Below are the exact Insight materials needed to ascend them, plus other Star Arcanists to build alongside.
Data updated: 2026-07-11
Yenisei — Review & Analysis
Yenisei is a pure Star-Afflatus (5★) survival support: Incantation II heals off her Max HP while stapling on [Sturdy] (DMG Taken −25%), and her Ultimate blankets the whole team in a [Shield] (up to 35% of her Max HP at high Sculpture) plus self [Immunity] against control. That gives her three overlapping mitigation layers — heal, shield, and damage-taken cut — on top of Incantation I trimming 20–25% off enemy DMG dealt. She is a defensive keep-the-team-standing pick, not a damage source.
- Extremely thick multi-layer sustain: Max-HP healing + [Sturdy] (DMG Taken −25%) + a team-wide [Shield] (25%→35% of her HP as Sculpture rises).
- Her Ultimate self-grants [Immunity] to Stat Reduction/Status Ailment/Control, so she rarely gets locked out right when the team needs the shield.
- Everything scales off Max HP, making her sturdy on pure HP investment with no reliance on offensive stats.
- Almost no damage contribution — Incantation I is a single-target hit with a debuff attached, so the team must supply the actual killing power.
- Star Afflatus is countered by Plant (she takes +30% DMG from Plant enemies), and her strongest effects lean on banking [Flow] and managing Incantation tiers, so she needs a little ramp.
Level Incantation II first (her heal + [Sturdy] core), then the Ultimate to thicken the team [Shield] and keep [Immunity] up; leave Incantation I last since it's mainly enemy DMG reduction. Because everything scales off Max HP, pick a Psychube geared toward HP/survival and healing effectiveness, and skip pure ATK/Crit Psychubes that do nothing for this healer role.
Overview
Base Stats (max level)
| Base Stats (max level) | Lv.1 | Lv.30 | Insight 1 · Lv.40 | Insight 2 · Lv.50 | Insight 3 · Lv.60 |
|---|---|---|---|---|---|
| HP | 1,575 | 2,390 | 4,008 | 5,976 | 7,031 |
| ATK | 207 | 314 | 526 | 784 | 922 |
| Reality DEF | 120 | 182 | 304 | 454 | 534 |
| Mental DEF | 120 | 182 | 304 | 454 | 534 |
| Crit Rate | 9.2% | 9.2% | 10.4% | 11.6% | 12.8% |
| Crit DMG | 143.8% | 143.8% | 145.6% | 147.4% | 149.1% |
Yenisei — Skills & Incantations
Incantation I — The Doer
Incantation “Insight II: 1-target attack. Deals 350% Mental DMG. Inflicts DMG Dealt -25% for 2 rounds on the target hit.”
Incantation II — Words of Water
Incantation “Insight II: 1-target heal. Recovers (the user's Max HP x40%) HP to an ally and grants 1 stack of 【Sturdiness】 to the target. Then, recovers (the user's Max HP x25%) HP to the ally with the lowest HP percentage and grants 1 stack of 【Sturdiness】 to the target.”
Ultimate — Ritual to the End: The Torrent Knows All
Ultimate “Insight II: Mass buff. Grants a Shield with (the user's Max HP x35%) HP to all allies for 2 rounds. Grants 【Immunity】 to the targets for 1 round. Grants 2 additional stacks of 【Flow】 to self.”
Insight Legacy
Incantation “Insight III: When casting a Heal-type basic incantation, consume 1 stack of 【Flow】 and enter the 【Empower Incantation I】 status for 1 round (only effective when not in the 【Empower Incantation I】 status).”
Skill Quotes
“Prepare your glass bottles before heading out.”
“Prepare your glass bottles before heading out. Used for storing water.”
“Prepare your glass bottles before heading out. Used for storing water and other purposes.”
“She doesn't like to express herself.”
“She doesn't like to express herself. It's not because of her personality.”
“She doesn't like to express herself. It's not because of her personality, but because of water.”
“From where one comes, to where one returns.”
Insight Materials
Insight 1
Insight 2
Insight 3
Resonance Materials
All 14 Resonance levels
Recommended Psychubes
Where to Get
Teams with Yenisei
Brume, Lopera and Lorentz Butterfly all carry the Burn tag — stacking Burn from three sources shortens the time-to-kill on a single target far more than one Burn dealer alone. Yenisei rounds the team out with Shield + Heal + Moxie support so the DoT window survives longer. None of the four needs a Euphoria to function.
Teams →
Isolde and Spathodea both pair Burn with Crit — igniting a target then critting the burning DoT window multiplies total damage. J adds a second Burn tag plus Shield/Riposte for frontline durability. Yenisei sustains. Isolde, J and Spathodea all require their Euphoria to reach this ceiling.
Teams →
Lorentz Butterfly, Beryl and Marsha all tap into Glow together with Crit — combining it across three kits at once outperforms any single carry doing it alone. Yenisei keeps the line-up alive with Heal so that payoff has time to land.
Teams →
Vila, Avgust and ONiON all tap into Heal together with Sturdy — combining it across three kits at once outperforms any single carry doing it alone. Barbara keeps the line-up alive with Heal so that payoff has time to land.
Teams →
Mercuria's Ultimate is the only kit in the roster confirmed to grant 【Rank Up】 to the whole team, and the same cast dispels enemy buffs while stacking party-wide Crit Rate — both feed straight into Argus, whose passive already locks in a guaranteed Crit and whose own second skill dispels the target's buffs independently, so the two dispels rarely whiff. Hissabeth adds a second wide Mental nuke that runs almost entirely off her own card engine, needing nothing from the other three to keep firing. Yenisei keeps all three offense-first kits alive long enough to land their bursts.
Teams →
