Both characters don't share many interactions in canon. Although, they do at least appear to be friends, as neither character has displayed any serious resentment towards the other. Ibuki is sometimes bothered by Chiaki's idleness, likely because she is more hyperactive in nature.
In Chapter 2, Chiaki shows up at the diner to attend a girls-only gathering at the beach. Ibuki is surprised to see that she only came wearing a white bikini, and openly expresses her attraction to it. Saying that her heart is thumping sporadically.
Chiaki and Ibuki are often seen partaking in different activities together. They appear together in three out of the six Special Events in Danganronpa 2: Goodbye Despair. In Chapter 1, they attend a girls-only gathering at the hotel, and make their own deserts. In Chapter 3, they perform together at the music venue, along with Hiyoko Saionji, in honor of the recently deceased Mahiru Koizumi. Later on, they both attend a Japanese-style summer festival on the beach, wearing yukatas and igniting fireworks. In episode 2 of Despair Arc, they both compete against each other in a racing video game, along with Chisa Yukizome and Hiyoko.
- “Muah-haha! Wearing a bikini is suuuuuure daring! And you get bonus points for wearing a white one! My heart's not just thumping, it's thumping all sporadically like "Badump, thump! Thump, badump!"”
- — Ibuki gushing excitedly over Chiaki wearing a bikini.
Both Chiaki and Ibuki are two of the most popular characters from Danganronpa 2: Goodbye Despair. As well as the series in general. So naturally, some fans started pairing them together. Helping to fuel the ship was Ibuki's reaction to seeing Chiaki wearing a bikini in Chapter 2, as well as the fact that both girls share an interest in video games.
The ship is somewhat of a well-known ship, as its popularity is close to that of other popular Ibuki ships like Soudabuki and Pekobuki. However, it ultimately does lose to Band Aid and Twobuki as Ibuki's most popular shipping choice, and is much less popular than Chiaki's most popular ships, such as Hinanami, Kamunami, Komanami and Soniaki.
- Both characters like the following presents:
- Hope's Peak Ring
- Tips & Tips 2nd Edition
- Many-Sided Dice Set
- The Funbox
- The Funplane
- Power Gauntlet
- Nitro Racer
- Slap Bracelet
- Mini Wave-Dissipaters
- Century Potpourri
- Rose In Vitro
- Skullhead Mask
- Chiaki shares the same English voice actress as Himiko Yumeno, and Ibuki shares the same English voice actress as Tenko Chabashira. Both Himiko and Tenko are part of Tenmiko, which coincidentally has a similar dynamic to Nanabuki.