[Secret Squirrel]

Asuka Sato is a japanese singer associated to I've Sound, which is a company that produces music for adult games.
Source:
https://www.ive.mu/so_be_true_to_yourself.html

@Yurishizu

We are no longer limited to the four roles under the old system. You should credit artist exactly how they are credited in the booklet or other source, so in this case: Artist, 作詞, 作曲, 編曲. (For the artist linking that is. For the notes, keep them in English.)