With the arrival of Sou's free-spirited senior, a complicated love triangle begins...?! Touma, who is now a third year, resets his troubled relationship with his boyfriend, Sou, who was his whole world. He has developed a good bond with his classmate, Maki, who was the reason for the breakup, and is now a best friend with whom he can talk about his true feelings. Touma wishes to become friends again with Sou... Though he still feels shaken every time he thinks about him, he decides to use this new starting point as an opportunity to face the past. Quite unexpectedly, he meets Sou again, who is working as a teacher at the cram school he's attending...!