Bakugou, Denki, Kirishima are all great friends for one another. While Denki and Katsuki didn't initially get along with Bakugou finding Denki to be a particularly annoying, and Denki finding him rude their relationship has developed to a point where they're somewhat friendly acquaintances. Denki often teases and provokes bakugou occasionally going a little too far and being yelled at by Katsuki. Denki even started calling him Kacchan, While Bakugou is annoyed by it he seems to just ignore it.
Eijiro and Katsuki are friends, shown to hang out often. Eijiro is the only classmate Bakugou views as an equal, and he often calls him by his real name instead of the the nicknames. They often work together very well. Kirishima is the only person he can have a normal conversation without screaming his head off.
Denki and Kirishima are best friends and are always there for one another. Kirishima sits behind Kaminari, and they are shown talking on more than one occasion. After Kirishima's Hero debut where he defeats his first villain, Kaminari is the first person to congratulate him, and then proudly showing everyone else his friend's accomplishments. In the provisional licensing exam, Katsuki, Eijirou and Denki teamed up, taking down Seiji Shishikura. All of them eventually passed the exam. They demonstrated good teamwork, and mutual faith in each other.
All together make a perfect Friend Group, Katsuki not really showing emotions towards them makes them eager to grab his attention. While Bakugou is starting to grow as a character, he is starting to accept the fact that Denki and Kirishima are his friends. Kirishima and Denki show care for Bakugou, and are active trying to make him realize that they are his Friends.
BakuKiriKami is a rather unknown ship in the My Hero Academia Fandom, due to Kaminari not having as much interaction with Bakugou and Kirishima as they do with each other. Popular rival ships include: KiriMina, KamiJirou and BakuDeku.
While not having much popularity, it still has it's supporters, mainly due the friendship between all three.
BakuKiriKami week takes place between 20th-26th August. 
- BakuKami refers to the ship between Katsuki and Denki
- Bakusquad refers to the ship between the three, Mina Ashido and Hanta Sero
- KiriBaku refers to the ship between Eijiro and Katsuki
- KiriKami refers to the ship between Denki and Eijiro