Yakkai na Bokura
やっかいな僕ら
Sou and Keigo, once just best friends, have recently become a couple. Sou grows frustrated with Keigo's reluctance to advance their relationship. The situation worsens when Keigo forgets to bring a gift to Sou's birthday party. The book also includes a side story involving Sou's father, focusing on Mamoru and Hiroki during their high school years.