Haku was the original planner and video creditor for "Etude," and also appeared as Haku in the production lineup of "Concerto."
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Etude functions
Co-responsible with Yume for the original concept, with the video section signed alongside Rin Aozaki.
Series participation
The official Concerto production list continues; Each version's functions are recorded separately according to their own tables.
Related entries
- Participated Works:トレイメント～Etude～
References
Data compiled on: 2026-10-07.