I, Who Became Aware Of My Boyish, Hidden, Big-breasted Female Friend As The Opposite Sex. Hikari Azusa

There's always Hikari among the group that gathers. I never thought of her as anything more than a friend, but my view of her changed a little after she was confessed to by my friend. She asked me, "Do you think I should go out with that guy?" I really didn't want her to, but I pretended I was fine with it. Just as I was starting to realize my own feelings, Hikari invited me. She said, "I decided to go out with him, so let's have sex one last time."