Hayase, Mitsuki

速瀬水月

Mitsuki is friends with both Takayuki and Haruka, though she secretly harbors feelings for Takayuki. During high school, she was a competitive swimmer, but shortly after Haruka's accident, she quits swimming to care for Takayuki. When he fails to emerge from his depression, she throws herself at him and reveals her feelings. Mitsuki is well-meaning, yet she suppresses her emotions, letting them build up and erupt in dangerous ways. She also believes she is responsible for her friend's accident, since she was the main reason Takayuki was late for his date with Haruka.