Here he is! Hazuki's younger twin brother~!
Kazuka is quite the colourful character, lol, he dyes his hair and uses coloured contacts, without them his hair and eyes are the same colour at Hazuki's.
Kazuka appears to be friendly helpful and a bundle of energy, however, that's a mask for a more manipulative side he has. He also gets really mad, when people compare him to Hazuki, due to living in his brother's shadow for their childhood.
Kazuka and Hazuki don't get along, with Hazuki knowing of Kazuka's actual personality, and they butt heads on pretty much everything.

Kazuka's likes, are rabbits, people watching and going to the movies, and his dislikes are being compared to his brother, dogs and last minute changes to plans.
The easiest way to his heart? Rabbits. The dude is a sucker for anything to do with rabbits.