Owaranai Fukou ni Tsuite no Hanashi終わらない不幸についての話

This is the story of Udou’s brother, Takayuki from “Gosan no Heart”. One day, at the party Takayuki attends, he meets Takeuchi - his old classmate from high school 8 years ago. Takeuchi’s girlfriend in highschool was stolen by Takayuki. What will happen when the two meet? What will happen when one of them is drunk? Will Takayuki painful feelings of unrequited love come to an end or will there be a happy ending?