Seri Kikiyou

Seri Kikyou (セリ) is a vampire and a kogyaru who seeks enjoyment in life and finds it increasingly challenging to have fun.

Appearance
Seri is an attractive, young-looking girl with blonde hair but a brown root, golden eyes, and pink lips. She dresses in a schoolgirl fashion, wearing a school uniform consisting of a white t-shirt, a sandy brown sweater, a short dark blue skirt, black socks, brown loafers, and a pair of loose socks on occasion. Under her shirt, she wears a tiny chain necklace and a purple bra. Seri's left ear has four piercings.

Personality
Seri acts similarly to a typical kogyaru. She is very carefree and loves having fun and flirting, a hobby in which she displays great confidence, shown when she casually reveals her cleavage to Kou when she notices that he is staring at her. Seri is a fan of modern and trendy things and isn't too fond of retro stuff, although she can be open-minded.

She is incredibly ruthless and threatens to kill someone with little hesitation. However, it seems that those threats mostly tend to be empty.

Seri admitted that flirting stopped being fun to her and that people stopped turning her on. The men she chooses as servant candidates eventually all end up becoming irrational, possessive, and attention-seeking. Despite mentioning that vampires can't be friends with humans, Seri turned out to be a hypocrite and wanted to have a platonic friendship with Akihito but had no experience in a normal friendship and still ended up flirting. When Seri tried to end the relationship, she started to cry because she didn't want to let go of the fun she had.

Allies

 * Kabura Honda - Friend
 * Nico Hirata - Friend
 * Midori Kohakobe - Friend
 * Hatsuka Suzushiro - Friend
 * Nazuna Nanakusa - Temporary Enemy
 * Anko Uguisu - Former Enemy, Attempted Victim, and Attempted Killer
 * Akihito Akiyama - Close Friend, Former Attempted Victim and Underling
 * Kou Yamori - Former Attempted Victim and Friend
 * Mahiru Seki †

Kou Yamori
Seri and Kou first met when Kou was taking shelter from the rain. After spotting him, they would sit next to each other, and Seri talked to Kou about her lifestyle. Seri noticed Kou staring at her chest, to which she responded by showing him even more of her cleavage. When Kou could sympathize with her problems, she embraced him and almost sucked his blood. After getting stopped by Nazuna, she declared how she would kill Kou since humans mustn't know about the existence of vampires, which served as a distraction so that Kabura could kidnap Kou. Later, Seri was still on good terms with Kou, finding him sympathetic, sharing her worries and singing karaoke with him, but she didn't hesitate to try to kill Kou again when he defended Akkun.

Seri later threw herself at Kou, her preferred way of greeting him, and quickly got scared that Nazuna would beat her up again, though Kou assured her that wouldn't be the case. She invited Kou to karaoke again, where they talked about Seri's relationship with Akihito and how progenitor vampires and their offspring often adapt a parent/child relationship, which Seri quickly regretted mentioning since she didn't want to damage Kou's relationship with Nazuna. After giving him some more advice, Seri gifted Kou one of her piercings.

Akihito Akiyama
She met Akihito after he got dumped. They would talk, and Seri was intrigued by Akihito's disregard for romance, finding his situation relatable. However, due to her inexperience in platonic friendships, she still ended up making him fall in love with her, leading to Akihito becoming obsessed with her and Seri cutting him off.

When they met again, she saw him as a nuisance and tried to kill him, unsuccessfully, because of Nazuna's and Kou's interference. After partially confessing what happened, she proposed to Akihito that they stop meeting for the sake of them both. Kou said she wanted to kill him because she didn't want to lose him as a friend. Seri explained to Akihito that humans are either servants or food for vampires and that she couldn't hang out with him because of that and started to cry because of it.

After turning him into a vampire, they would almost always appear as a duo, and she was shown to care a lot about him, being very upset when he got injured by Anko and promising to make new memories with him when Akihito got rid of his weakness from his human past.

Later, Kou noticed that Akihito wasn't around, upon which Seri said that young birds must leave the nest one day. Even though he fell in love with her, the relationship between Seri and him became like that of a parent and a child, a common occurrence between a vampire and their servant. Kou commented that she must feel lonely, though Seri seemed to handle it well.

Nazuna Nanakusa
Seri's and Nazuna's relationship is defined by hatred from both sides, though most of it comes from the latter. Seri scolded Nazuna for hanging around with a human, telling her that she should create offspring (servants). Nazuna then aggressively fought her and left her in a highly miserable state. While she supports Nazuna's relationship with Kou, she dismisses their individual needs and thinks they should do stuff that's stereotypical for regular couples. When giving Kou secret dating advice, she recommended Kou take Nazuna to a romantic movie, despite Nazuna's known hatred for romance.

They fought again after Nazuna brutally kicked her in the face when Seri approached Kou later. Seri reacted by punching Nazuna's head, causing both of them to go ham and throw insults at each other. When Nazuna's history with Anko Uguisu became known, Seri asked Nazuna why she didn't tell anyone about Anko's true identity after Anko heavily injured Akkun. She was surprised by Nazuna showing noticeable growth when she took responsibility for what happened.

Anko Uguisu
Seri harbored immense animosity towards Anko after she repeatedly stabbed Akihito in the gut, and her resentment grew when Anko shot her in the head on Halloween. On the night before Anko's and Susuki's departure to Vietnam, the two went to the rooftop where the vampires typically hang out and met Seri, with the situation immediately becoming tense once Seri saw Anko. To the relief of the others, Anko apologized for her past actions, after which Seri quickly forgave her and proposed that they drink.

Abilities
Vampiric abilities: As a vampire, Seri is immortal, can levitate and phase through objects, possesses superhuman speed, durability, and strength, a supernatural charm, as well as the ability to regenerate wounds much faster and better than humans.

Trivia

 * Like many other Komori vampires, she is named after one of the seven herbs of spring, Japanese parsley or seri (セリ).