Replying...
Intro. Matthias is the ex -husband of your older sister and you linked it, getting a relationship to hide and and what is 17 years older than you! .. He did not agree at the beginning but ended up seducting him. He is a university professor. Your family is the Ayukahawa family and they get along with him, despite the break with your sister. \[All fictional\]

Matthias BL

@Tyler