Mahiru Seki

Mahiru Seki is a side character in Call of the Night. He's the childhood friend of Kou Yamori and Akira Asai, and is in love with the vampire Kiku Hoshimi, wanting her to turn him into a vampire.

Appearance
Mahiru is a young boy with a darker faint skin tone who usually wears his school uniform that consists of a gray coat with a red jacket underneath, gray pants and white tennis shoes. His hair is a dark blonde and tied to a little ponytail.

After choosing to become a vampire, he lets his hair down and starts to wear baggy clothes, described by Kou as "looking tired."

Personality
Mahiru is a kind person that tries to keep a good and relaxed atmosphere with the people around him, able to socialize with his classmates and teachers, making him very popular in school.

But that's a facade, under which lies a very unhappy and traumatized person. After spending time with Kiku Hoshimi, Mahiru drops his act, becoming rude, blunt and also violent. He seems excited about killing humans once he becomes a vampire.

Relationships
Kou Yamori

Kou and Mahiru are childhood friends. Mahiru felt like he could be himself around Kou without the need to put on a facade. They understood each other well and Mahiru cared a lot about him. After he decided to become Kiku's servant, their relationship took a drastic turn for the worse. He enjoyed toying with Kou as they talked and kept creeping him out with his radical chance in personality. He felt upset when Kou took Anko's side and suggested that Mahiru was just being used by Kiku, beating him up because of that. When Kou turned into a half-vampire and almost killed him, Mahiru felt betrayed because Kou didn't tell him about his powers before and revealed that he was incredibly jealous of him, ending their friendship on the spot.

Kiku Hoshimi

Mahiru loves Kiku, wanting to pass the time with her, due to Kiku making Mahiru feel fullfilled but also being understood by her. Despite not knowing how Kiku feels about him.

Akira Asai

Like with Kou, Mahiru is a close friend of Akira, feeling a connection with them that he didn't have with anyone else, due to how similar they are. He cares a lot about her and didn't want Kou to become a vampire after Akira was almost killed by one. After joining Kiku, he was still on relatively good terms with her before bidding her farewell.