They're both good reds.

Keiichiro reminded me a lot of Matoi from GoGoV, hotheaded, badass, but does show he has common sense, unlike the previous show stealing gary stu who came before him.

Kairi calm, level headed, funny, and made for a great contrast with Keiichiro's hotblooded, and even despite always trying to catch him, he does show respect for Keiichiro.