Manabu Horikita/Relationships

Suzune Horikita
Suzune is his younger sister who seeks to prove herself in his eyes, showing that she greatly admires him. Despite this, Manabu views his sister as a disappointment due to her placement in Class D which greatly displeases him. In Episode 2, Manabu's contempt for his sister's academic failure nearly caused him to physically attack her but Kiyotaka Ayanokōji quickly intervened. After a brief scuffle, Manabu left but not before admitting he was surprised she made a friend though she denied it as he voiced his disappointment in her antisocial ways.

In Episode 5, they are seen together again at the hearing of Ken Sudō and Manabu's very presence causes Suzune to get shaken up so much that she couldn't speak. When Ayanokōji helps her get her resolve back, Suzune is able to get her point those present and the hearing commences much further. Despite his sister's strong determination in the case, Manabu was still not impressed with her efforts.

Kiyotaka Ayanokōji
The two first met when Ayanokōji prevents him from attacking his sister. When Suzune asked him to stop, Ayanokōji complied before he nimbly avoided Manabu's strikes even pushing him back. Manabu was impressed by this asking Ayanokōji if he studied martial arts as the latter gives him a vague answer. Manabu soon recognizes him as the student who scored fifties on his entrance exams. He inquired on this even hinting that he is hiding his intelligence on purpose but the latter shrugs this off.

They meet again in Episode 5, where they are present during a case for Ken Sudō. It is shown that Manabu has some expectations for Ayanokōji as he believed that his presence in the hearing meant he had a strategy but he is again given a vague answer.