Yuuka — full name Hayase Yuuka (早瀬ユウカ) — is the treasurer of the Seminar at Millennium Science School in Blue Archive, the STEM-focused academy where logic always comes first and every decision is calculated down to the decimal. She is a two-star Tank whose signature weapons are a pair of sub-machine guns classified as Machine Daggers, compact rapid-fire arms she wields with the same precision she applies to budget spreadsheets and tactical simulations. Her blonde hair and clip-on personality — efficiency masking warmth she will never admit to — have made her a fan favorite for academy slice-of-life content.
Her Japanese voice is performed by Ran Haruka (蘭はるか), a seiyuu whose crisp, slightly haughty delivery captures Yuuka's intellectual confidence and the defensive edge she puts up whenever anyone gets too close to her real feelings. When CharaVox generates a Yuuka-inspired reference clip, the prompt targets her character performance traits — rapid-fire verbal precision with a dismissive undertone, math-proud declarations that demand you trust the numbers, and the flustered backpedal of a girl whose calculations did not account for genuine friendship — without replicating Haruka's real recordings.
On this page the workflow stays practical: original sample lines that nod to mathematical proofs, seminar budgeting, and the awkward social equations Yuuka never quite solves rather than copyrighted story beats, a generated local-model reference audio target, links to related Blue Archive characters like Ako, Shiroko, and Noa, and prompt direction that describes tone instead of naming performers. The result is a Yuuka voice card you can drop into lore shorts, fan edits, narration, and academy comedy scenes without crossing into official audio territory.
Use the card for fan-safe Blue Archive content where the Seminar treasurer needs to announce a research budget, narrate a Millennium tactical calculation, or cameo in crossover shorts. The reference audio on this page is generated locally from original text — no official voice clips are stored, reproduced, or distributed.
