Soul Friends

Soul Friends is a slash ship between Kazuichi Souda and Hajime Hinata in the Danganronpa series.

Canon
Hajime is a close friend of Kazuichi's. Kazuichi latches onto Hajime, calling him his "soul friend".

Throughout their friendship, a brief break up ensues when Kazuichi blames Hajime for "leading them" into Monokuma's trap and ends up turning to Nagito instead. They later make up however.

In Island Mode, Kazuichi appears to question his sexuality around Hajime Hinata (for example, he has excited and then confused reaction about taking clothes off with him and he's afraid he'll dream about a date with Hajime after he jokingly suggested a one), only to comically confess to him that he is attracted to tanks.

Kazuichi’s trust issues cause him some conflict with Hajime, but he calms down quite soon and is willing to apologize. Despite some issues, he develops a close friendship with Hajime. However, Hajime can be quite annoyed by him, since he can act rather clingy and turns even more whiny and threatens to bug Hajime even more if he refuses to hang out with him.