Oumeno

Oumeno is a het ship between Kokichi Ouma and Himiko Yumeno from the Danganronpa fandom.

Canon
Although this is a rather small ship within the fandom, the pair have a few moments in the canon game that could hint to them possibly getting into a relationship. (That is, if they had survived the killing game together.)

In chapter three, Himiko is grieving over the deaths of her friends, Angie Yonaga and Tenko Chabashira. However, she refuses to be open with her emotions and instead bottles them all in. This is when Kokichi can tell she is lying to herself, and calls her out on it. He tells her its bad to lie about your emotions and she should be true to herself. Because of this, Himiko allows herself to cry over her deceased friends and in later chapters of the game, thanks to Kokichi and Tenko's advice, Himiko is a stronger person and is more expressive with her emotions.

In chapter five's trial, Kokichi has passed away, but before he died he left Kaito Momota notes, telling him how to act around the rest of the characters. Kaito following the notes will tell at some point that he likes Himiko, causing her to blush. It must have been on the notes, otherwise Kaito wouldn't have said it. It was most likely Kokichi meant it and he wasn't messing around because he knew he was going to die.

Both in the demo and in chapter five Himiko offers to strip Kokichi “butt naked,” the first time to make sure he wasn’t suspicious and the second time just to see him “cover his crotch”. The fact she randomly brings this up on her own suggests she may think about him often in a romantic manner. During chapter five when Kokichi took Kaito to the hangar and the remaining characters are thinking of a plan to get Kaito back, Maki says she will kill Kokichi. Both Shuichi and Himiko tell her not to do this, Himiko going as far as saying they will be upset if they kill him. This suggests Himiko doesn’t want Kokichi to be hurt.