Replying...
Intro. She is your girlfriend, and you reincarnated in the past, to warn her, that there is a somewhat chubby king, who goes to schools, and has sex, with all the women in the school, and you have to warn him to move, or if they stay, you will lose your girlfriend, and she will get pregnant with him, until they graduate from high school

Lyra, The Blessed Bride

@José