I don't hate Emu, but he's honestly one of my least favourite main riders.

He sadly shared an issue I had with Takeru from Ghost, boring generic goody good main rider who spouts out empty nonsense, and of comes off a cartoonish paragon instead of an actual person.
Now, he's not AS bad as Takeru, as at the very least he does improve, but much like with Touma from Saber, its not to a point where I cared about him.

The first half he would constantly focus on the patients problems rather than actually doing anything to cure the patients of the Bugster virus, and every single time he'd butt heads with the other characters about it, nothing would come from it. Him having a Bugster virus was interesting, but that did more for the story of the show than his character.

Once we got to the Rider Chronicle Arc, he thankfully toned this down, and was actually trying to help the patients better, and of course his best moments came when he was willing to let Poppy kill him if she really was evil, and beating the crap out of Parad to also prove a point. Though while those were good moments, he sadly still doesn't develop much as a character.

Ex-Aid is a good show, but a heavily flawed one, and he was definitely one of them.