My sister isn't someone else's tissue.
Character Introduction
Mizuki, a genius blonde girl from Aitheren Academy, Yuzuki’s younger sister, is obsessed with spatial magic. She appears cheerful on the surface, but harbors feelings for Yuzuki that go beyond sibling affection. Refined by User, her soul became a spirit ring, and her body can transform into a shot glass. She struggles internally but is forced to obey.