Monocest

Monocest is the family and het ship between Monotaro and Monofunny/Monophanie from the Danganronpa fandom.

Canon
In the very next chapter after the one that introduces Korekiyo's incest relationship with his Sister, Monotaro and Monophanie develop feelings for each other. In the morning and nighttime announcements, they portray in comedic way various stages of relationships, with them falling for each other, Monotaro turning out to be the abusive boyfriend and Monphanie leaving him, Monophanie watching as Monotaro struggles without her, and the two forgiving each other.

Later in the chapter, Monotaro's memory is worse than usual and he forgets about their feelings, joining the students' side, believing that Miu Iruma was his mother. Monophanie is sad about this, which later turns out to be because she's pregnant with him. Monotaro regains his memory by the time of the trial and becomes Monophanie's supportive partner, for the good of their future kids. In the fourth execution, Monotaro assists Monophanie while she's giving birth.

Their new models introduced in Chapter 5 lack their previous memories and thus, both new Monotaro and new Monophanie don't remember about their past relationship with each other.

Trivia

 * Although they're just robots, this ship can be counted as both a family and het ship because they play the roles of siblings and a male and female robot respectively.