AkuNami

AkuNami is a Het ship between Axel and Naminé in the Kingdom Hearts series.

Canon
Axel met Naminé when he went to Castle Oblivion as a part of his mission with Organization XIII. She was being held captive my Marluxia who was forcing her to tamper with Sora's memories. Axel initially plays along with this plan because he wants Marluxia and Larxene to trust and is also interested in testing Sora. However, he later talked to Naminé and allowed her to escape so that she could go speak with Sora. Marluxia later held her as a shield but Axel was willing to attack anyway until Sora showed up.

After the other members of the organization in Castle Oblivion were killed, Axel was ordered to find and retrieve Naminé. However, he later gave up on this as he saw no point in doing so. While Roxas was being kept in a simulated Twilight Town, he saw a drawing of himself with Axel and Naminé reminded him that they were best friends. After Roxas merged with Sora, Naminé was forced to run away as DiZ wanted her destroyed and Axel went with her as he decided to turn against the organization. He agrees to protect her and is strangely moved by her words.

Fanon
AkuNami has a decent amount of popularity in the Kingdom Hearts fandom. It is mostly based on their interaction in Chain of Memories. However, Axel also demonstrated willingness to harm her if he had to in order to get to Marluxia. In the final mix of Kingdom Hearts II, an extra cutscene was added to show that Axel is the one who protected Naminé when Diz wanted her to be destroyed. This also increased the amount of fan support for this pairing.

Trivia

 * Riku entrusted Axel with the task of protecting Naminé after Roxas merged with Sora.