Rin Tohsaka build
Rin Tohsaka
Rin Tohsaka turns every Skill-Point change into Gem Energy and CRIT support, then converts Archer's heavy spending into AoE damage and four restored points.
Quantum
Erudition- Role
- Quantum Erudition Archer support and Skill-Point sub-DPS
- Version
- 4.4
- Reviewed on
- August 12, 2026
Recommended build
Light Cone
Flickering StarsFlickering Stars is the unique best for Archer support: 18% CRIT Rate, 20% team DEF ignore and 72% Skill DMG for Rin all follow the duo's normal spending pattern.
When to use it : Have Archer consume at least 4 Skill Points in one turn so Radiant Crown grants its three-turn team DEF ignore and Rin Skill amplification.
Eternal CalculusEternal Calculus S5 supplies up to 52% ATK and 16% SPD when Rin Tohsaka's Joint or Enhanced Skill hits at least three enemies, supporting her 135–160 SPD sub-DPS target.
This five-star Erudition cone is permanently redeemable and superimposable through Herta's Store without a limited Light Cone Warp.
The Seriousness of BreakfastThe Seriousness of Breakfast grants unconditional DMG and stacking ATK after enemy defeats.
When to use it : Prefer it in multi-wave encounters where the wearer can secure eliminations and retain the ATK stacks.
Relics
Genius of Brilliant Stars is the unique best released set in both direct guides, adding Quantum DMG and DEF ignore that scales especially well with the signature's teamwide ignore.
When to use it : The second 10% DEF ignore requires Quantum Weakness; even without it, the first 10% compounds with Flickering Stars for Rin's meaningful sub-DPS share.
Two-piece Messenger Traversing Hackerspace plus two-piece Guard of Wuthering Snow is a transition mix: Increases SPD by 6%. Reduces DMG taken by 8%.
It reuses strong pieces from two sets while a complete four-piece configuration with equivalent main stats and substats is still being farmed.
Planar Ornaments
Penacony, Land of the Dreams is the unique best for the recommended Archer-support role: 5% Energy Regeneration Rate for Rin and a permanent 10% Quantum DMG buff for Archer.
When to use it : Place Archer first in the lineup and keep both Quantum characters together so Penacony's same-Type 10% DMG buff applies to him.
Broken Keel is a ranked alternative with this two-piece effect: Increases the wearer's Effect RES by 10%. When the wearer's Effect RES is at 30% or higher, all allies' CRIT DMG increases by 10%.
When to use it : Reach 30% Effect RES to activate the teamwide CRIT DMG bonus.
Team lineup
Archer unlocks Rin's Joint Follow-Up and receives her full named buffs, Sparkle funds and amplifies his repeated Skills, and SP-positive Gallagher sustains without interrupting the duo's economy.
When to use it : Use Sparkle to keep the expanded Skill-Point pool healthy, let Archer cross the Joint trigger before Rin ends her turn and use Gallagher's Basics to refill points between Archer chains.
Trace priority
- Talent
- Ultimate
- Skill
- Basic ATK
Rin Tohsaka expands the Skill-Point cap, buffs every ally who spends or restores points, stocks Gem Energy and repairs Archer's economy with a Joint Follow-Up ATK.
How to play it
- 1Open with Conversion Charge to add 10 Gem Energy to the 20 granted on entry, then use Basic attacks while Archer establishes Circuit Connection and spends Skill Points.
- 2Trigger Freeform Tohsaka Style after Archer leaves 3 or fewer Skill Points or actively uses Caladbolg II five times; the Joint Follow-Up restores 4 Skill Points and resets only when Rin's turn ends.
- 3Use the Ultimate before Archer's damage window for 1 Skill Point, three turns of vulnerability and 12 Gem Energy from A6. Use Second Magic Experiment only when its spend down to 2 Skill Points will not interrupt Archer's next chain.
Sources and methodology
Editorial recommendations are written from released game data, then cross-checked against specialist calculations. They are not copied from a single tier list.
Review method
Prydwen and Icy Veins were read independently for Rin Tohsaka's released HSR Version 4.4 kit, never for the source franchise, then checked against the exact local snapshot. The E0 Trace-level-10 model begins at 20 Gem Energy, enhances Skill at 15 Gem Energy or 7 Skill Points, converts every point spent above 2 into 2 Gem Energy, then spends 3 per repeated attack. It triggers the Archer Joint Follow-Up only at 3 or fewer Skill Points or after five active Caladbolg II uses and restores exactly 4 Skill Points once per Rin turn. Her own 150% ATK and 15% Quantum RES PEN Trace is kept separate from sheet targets, and CRIT is capped at 100%. Official 4.4 notes and the immutable snapshot establish the same release baseline, so no synthetic delta is claimed.
- Prydwen — direct released rin-tohsaka build analysisChecked 2026-08-12
- Icy Veins — independent released rin-tohsaka build analysisChecked 2026-08-12
- TurnBasedGameData — Version 4.4 exact snapshotChecked 2026-08-12
- HoYoLAB — Version 4.4 update detailsChecked 2026-08-12
Independent E0 HSR recommendations for Rin's preferred Archer-support role. CRIT stops at 100% effective, and the 135–160 SPD target is a sheet range before her own temporary 20% Trace buff.