Natsuki Kenichi (菜月 賢一) is Natsuki Subaru's father.
Kenichi is a good-looking, relatively tall, middle aged man with short, combed-back black hair similar to Subaru's. He has drooping black eyes with angled eyebrows. For his age, he's surprisingly well built and athletic, although his legs are a bit shorter, given his height. Most of the time, he's seen wearing average-looking, rectangular glasses that complement his usual laid back smile and positive demeanor perfectly. One could immediately recognise his blood connection with Subaru.
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.