Pink Heart Jam

From Good Girls Scan BL:
College student Haiga has just entered the Multiphonics Research Club. It’s there that he meets an impressive upperclassman, Kanae. Fascinated by his stunning guitar performance, he thinks, “I want to try talking to him” while unable to seize any opportunity. One day, Haiga attends a club drinking party, and at the upperclassmen’s suggestion, he ends up experiencing first-hand what happens at a gay box hell*…? A campus love story that started by chance between a sociable young man X Cool, beautiful senpai working the night life.
*T/N: A “gay box hell” is a prostitution service shop.