15歳、今日から同棲はじめます

Hiyori is 15 years old and has just entered high school. Very happy, she believes that she will finally be able to gain independence by living alone in her own apartment. But everything doesn't go as planned: when she moves in, she finds that she will have to live with Soushi, her childhood friend! And the worst part of all this is that for no reason at all, he steals her first kiss when he sees her... Upset by the events, Hiyori will start to pay attention to Soushi, to think of him as a man and more just as a simple friend.

Synopsis Source-https://manga-encyclopedie.fandom.com/fr/wiki/15-sai,_Kyou_kara_Dousei_Hajimemasu.