Twobuki

Twobuki is a het ship between Ultimate Imposter and Ibuki Mioda in the Danganronpa series.

Canon
Ibuki admires Ultimate Imposter while they are impersonating as Byakuya Togami, thinking that they're very cool and reliable and she admires their leadership skills. They are sometimes a bit annoyed with her.

During chapter 2, after his death, she states that she misses "Byakuya" a lot. In addition, during chapter 5 when she and the other deceased characters show up, she greets him by oinking and explaining that she said “You're so cool” in pig talk.

While not apparent in the game, many manga adaptations portray Ibuki with some sort of crush on the imposter and she's often shown to be attracted to his heavy build. Though, it should be noted that the manga are non-canon.