Scum's Wish - S01

To everyone around them, Hanabi Yasuraoka and Mugi Awaya look like the perfect couple. In truth, they are bound by the same secret pain: both are in love with people they cannot be with. Hanabi has loved her childhood friend and neighbor Narumi Kanai for as long as she can remember, so she is overjoyed to find out he is her new homeroom teacher. But Narumi soon catches the eye of the music teacher, Akane Minagawa, and a relationship starts to grow between them, much to Hanabi's dismay. Mugi was tutored by Akane in middle school and has loved her ever since. A chance meeting in the hallway brings him together with Hanabi. As these two lonely people spend more time together, they decide to use each other as a stand-in for the ones they truly love, sharing physical intimacy to hold off their loneliness.