Zen Joumori

Zen Joumori is the youngest son of the wealthiest family in Japan, owners of the Joumori company.

At the beginning of the series, he is 15 years old, and due to a marriage agreement made between his grandfather and the grandfather of Hinata Nakagawa (who is one year older that him), he becomes the fiancé of Nakagawa, being the official heir of his parents' company.

Originally Nakagawa's fiancé was Sou Joumori, Zen's older brother, but because Sou decided to undertake a trip to Europe and abandon his responsibilities as heir, the right to marry Nakagawa was transferred to Zen.

Zen is a cold, lonely boy, egocentric and rude at first; however, the warmth of Nakagawa ends up making him show an extremely overprotective, tender, and loving side to him, which he only shows around Nakagawa. He also tends to be very perverted with her, looking for any opportunity to kiss her and touch her without a care to the place or situation.