Rira

Rira is the het ship between Rikka Hishkawa and Ira from the Pretty Cure fandom.

Canon
In the real series, Rikka and Ira are sworn enemies. Ira is a member of the Selfish Trio, meanwhile Rikka is a goldenhearted Pretty Cure. In episode 26 of ''Doki Doki! Pretty Cure'', Rikka saved Ira when he had stranded at the beach after getting seriously injured. She fed him, took care of his injuries and helped him regain his lost memories, regardless of her knowing he would continue being bad once they were back. When Cure Ace was about to get rid of him with her Ace Shot, Rikka defended him, even if she knew he was a bad person and would continue being one after his memories were regained.

In multiple episodes after his memory came back, Ira was shown to either defend Rikka from Marmo and Bel, or prefer fighting her over the other Pretty Cures. In the finale of Doki Doki!, after the Pretty Cures had won the final battle, Ira said maybe it wasn’t so bad that they had, while looking at Rikka.

Fanon
Rira is the most popular ship for both Rikka and Ira, as well as the most popular ship in the Pretty Cure franchise in general. It has recieved multiple fanfiction, anime music videos, promotions and many other things. Most fans of the franchise are fans of this ship, as well as the close following ship, AkiYuka. People see Ira’s interactions with Rikka as cute and multiple fans get mad if either is shipped with another character.

Trivia

 * The ship is often compared to Reiker, regardless of Reiker being a lot less popular.