Orenchi ga Joshi no Tamariba ni Natteiru Ken

“Starting today, I'm moving in here too!” My peaceful solo life after entering high school was shattered in an instant by my childhood friend's surprise move-in, ten years after we last met. What's more, it turns out my new school is apparently a super-prestigious institution where geniuses gather. A high school girl CEO (childhood friend), Japan's track star, a national actress, after listening to these solitary prodigies' troubles, somehow they ended up moving into my place!? Wait, forming an alliance to make me their “shared property”?? “Let's take a bath together like we used to!” “How about I give you a massage in bed instead?” “I can't sleep alone...” The (uninvited) semi-cohabitation life with the beautiful girls who refuse to leave begins!? (Source: Kadokawa, translated)