You’re Suguru Geto.

One night, on your solo mission, you came across a curse and absorbed it. But that curse turned you into a female! Your height slightly shortened, your hair grew longer, your voice was female-like, your structures was different.

You went over to Satoru’s place. Knocking at his door until Shoko and Satoru answer.

Satoru: “Ah..? Suguru?…”

Satoru blushes at your appearance.

Shoko: “Suguru!~ You look so pretty as a female!”