Hina wa Mitsuiro no Koi ni Torawareru

Shinobu is a shy gay man who develops deep feelings for his best friend, Kenji, who is heterosexual and soon to be married. Struggling with unrequited emotions, Shinobu visits a gay bar in hopes of finding temporary comfort through a casual encounter. There, he meets Kou, an attractive man whose presence will significantly impact Shinobu's life.