The interactions between the three boys are less than positive in Danganronpa 2: Goodbye Despair. Fuyuhiko and Kazuichi appear to harbor the most resentment towards Nagito and his strange behavior, and aren't afraid to openly call him out on it. This isn't helped by the fact that the three of them are among the Killing School Trip's longest-lasting participants, as both Fuyuhiko and Kazuichi only grow more and more apprehensive of Nagito over time.
The three of them have a similar dynamic in Despair Arc, although they are not as negative. Fuyuhiko and Kazuichi are still shown to be put-off by Nagito's mannerisms, but they still treat him as one their fellow classmates, and are sometimes seen participating in activities together. In episode 2, the three of them all compete against each other while playing a video game, along with Teruteru Hanamura.
In Super Danganronpa 2.5: Komaeda Nagito to Sekai no Hakaimono, the three boys are shown to be best friends in Nagito's illusionary world. As Fuyuhiko and Kazuichi meet up with Nagito on their way to class, they notice that he appears injured, and suggests that he stop by the nurse's office, which he agrees to. Later on, when Kazuichi becomes too nervous to attend a date with his crush, Sonia Nevermind, Fuyuhiko and Nagito help him regain his confidence. The following day, it is revealed that Kazuichi had died, and both Fuyuhiko and Nagito attend his funeral. After finally waking up from the Neo World Program, Nagito reunites with Fuyuhiko and Kazuichi, hugging them both, making them uncomfortable.
The ship sailed as a result of the three boys being portrayed as best friends in the OVA. The ship could also be the result of indecisiveness among fans of all three ship combinations between the characters, similar to that of Pekomikibuki.
As far as poly ships go in the Danganronpa fandom, Kuzusoumaeda is among the more well-known. Although naturally, it loses in popularity to some of the characters' more popular shipping choices. The ship is more popular as a friendship, as opposed to being romantic.
- Kuzukoma refers to the ship just between Fuyuhiko and Nagito.
- Kuzusouda refers to the ship just between Fuyuhiko and Kazuichi.
- Soumaeda refers to the ship just between Kazuichi and Nagito.