Daisuke Kiriyama functions as a supporting character in the narrative, directly connected to protagonist Jin Takahira through their participation in the school baseball team. His involvement surfaces during the baseball team's storyline progression, where former members of Jin's biker gang transition into pivotal players. Specific actions or dialogue attributed to Kiriyama remain undocumented in available sources. He additionally features as a playable character representing the Bucchigiri series within the crossover baseball video game *Sunday x Magazine: Nettou! Dream Nine*, positioned alongside Jin Takahira on the Weekly Shōnen Sunday team roster.