Natsuki Kenichi (菜月 賢一) is Natsuki Subaru's father.
Kenichi is good looking enough that he is able to get the email addresses of high school girls.
Kenichi is sociable, usually talking with acquaintances while outside, and, coupled with his good looks, tends to get the email addresses of high school girls. He is usually in high spirits, but can be moody at times, and also enjoys teasing his son Subaru when he wakes up. As a mayonnaise lover, he collects the caps of empty mayonnaise bottles.