Hayato Oosuki

Hayato Oosuki (大好 隼人, Ōsuki Hayato) is the husband of Mamako Oosuki and the biological father of Masato Oosuki who is often away from home because of work and he was first introduced in Volume 10 of the novel.

Etymology

 * The name Hayato means "falcon" (隼) (haya) and "person" (人) (to).
 * Hayato's surname Oosuki means "love" (大好).