My girlfriend, who hides her boyish charm and large breasts, is starting to realize she's a woman. (Mizono Kazuka ADN-749)

Kazuka was always among the members of our gatherings. Although I never realized she was male, my gaze towards her changed slightly after my friend confessed his feelings to her. When asked, "Should I... date that guy?" I pretended to be okay even though I actually hated him. Just as I was beginning to realize my own feelings, Kazuka invited me. "Since I've decided to date that guy, let's have sex last."