This identity crisis makes no sense to me. I personally would've just gone with it. Only his sister and Rin care about his high school self and the girl he likes didn't even recognize his name when he was first introduced as a little girl. His life is infinitely better as a little girl than as a high school boy. Even his parents don't care about him otherwise they would've made an appearance. I mean what were his stellar traits as a guy: fapping and average test scores. Now that he's starting over he can learn more and actually have good grades by the time he gets to high school. and just because he's a girl it doesn't mean he has to get into a heterosexual relationship. So I don't really get why he wants to give this up to go back to being a guy.