KamiJirou

KamiJirou is the het ship between Denki Kaminari and Kyoka Jirou from the My Hero Academia fandom.

Canon
The two heroes-in-training were paired together during the Battle Trial and the Unforeseen Simulation Joint, showing to working well together. They also studied together under Momo's tutelage.

Though the two can hold casual conversations, most of the time they will argue. Even more likely, Kyoka will teasingly tell Denki rude things that will get on his nerves, like happen to find his brainless state uncontrollably funny.

Despite this, in the recent chapters of the manga, Denki is shown to hold Kyoka at a greater respect due to her talent in music and even gives encouragement to the point of flustering her.

In a certain interview with the voice actors of the main male characters of class 1A with the question being "Which female character would you marry?", Kaminari Denki's voice actor, Tasuku Hatanaka answered (after a long comedic pause of thinking ) Kyoka Jirou.

As well as that, in the OVA Training Camp of the Dead, Denki is seen holding Kyoka up when she is in pain due to an attack from Katsuki. This is not technically a canon fact in terms of plot, but hints that the people behind the anime do support this ship.

Fanon
On AO3 it is the second most written ship for both Jirou and Denki. It is also the twenty seventh most written in the My Hero Academia tag.