I Am Yukinoshita Yukino

When I woke up, I discovered that I had transmigrated into a girl.

With waist-length jet-black hair, soft, fair skin, and a delicate, beautiful face... It was only when I saw my reflection in the mirror that I finally realized I had transmigrated into the heroine of My Youth Romantic Comedy Is Wrong, As I Expected:

Yukino Yukinoshita.

PS: This is a gender-change story.