Tomoya has been in love with his childhood friend Kouhei. They get reunited once they were adults however this time Kouhei is a single father. Because of Kouhei's daughter Hinata who has taken a liking to Tomoya, Tomoya gets to spend a lot of time with Kouhei again and decides to stay and bear with being his friend despite his unrequited love. However Kouhei confesses his feelings and they became a family.
Antagonist (?) is the senpai who was Tomoya's gay partner in highschool. They were partners just to relieve each other since Tomoya wanted to forget his feelings for Kouhei.
Papa no Sukinahito