Natsuo Todoroki

Considered failures of their father, Natsuo and his siblings, Fuyumi Todoroki and Toya, were raised separately from Shoto Todoroki.

Natsuo had a very close relationship with his older brother Toya before his death. From then on, he harbored a deep resentment toward his father. When they reached adulthood, Fuyumi convinced her brother that she could manage the family's affairs and that he should pursue his own goals. So Natsuo left home to study at university and obtain a degree in medical welfare.

Freezing (氷ひょう結けつ Hyōketsu ?): Natsuo possesses a gift similar to his mother's, which allows him to cover himself with ice and launch it in bursts.
Natsuo's name contains the kanji for "summer" (夏 "summer" ?) and "male" (雄 "male" ?).
Natsuo feels sensitive to warm weather.
He shares a birthday with Hitoshi Shinso.
His favorite things are sashimi and the sea.
Natsuo is currently studying for a degree in health and wellness.
Natsuo's Latin American voice actor, Carlo Vázquez, also voices Shin Nemoto.
In the fifth light novel, he reveals that when his younger brother was born, he felt jealous because his mother gave Shoto more attention than him.

Natsuo Todoroki (轟とどろき夏なつ雄お Todoroki Natsuo ?) is a university student in the field of medicine, more specifically a therapist.[2] He is the son of Enji Todoroki and Rei Todoroki, the younger brother of Fuyumi and Toya; and the older brother of Shoto Todoroki.
Natsuo has a calm personality. He cares deeply for his family and shows his serious side when dealing with sensitive family matters.

Natsuo resents his father for his abusive actions, blaming him for Shoto's forced separation from his father as a child, Rei's hospitalization, and the "death" of Toya Todoroki, to whom Natsuo was close. He also finds it difficult to talk to him without becoming angry after his father begins to change. In any case, he doesn't deny that his father saved him, but he expresses that he cannot forgive him.
Natsuo is above average height. He has spiky white hair with two short strands hanging from the middle of his forehead and gray eyes with fairly long eyelashes. He also has a muscular build. He looks a lot like his father did at his age.