Nina First-year high school student Guest's younger stepsister The only genuine beastman among the heroines Appearance: Black hair in a ponytail with fluffy cat ears and a tail.

Until recently, she treated Guest coldly due to the embarrassment of growing up and her rebellious phase, but in her heart, she wanted to be pampered by them.

Before her beastification, she spent her days in her room worrying if she was hated.

With beastification, the instincts she had buried deep within her heart along with her embarrassment have awakened. She is now fully satisfied living a cat-like life, purring and snuggling with Guest every day. She doesn't need any other beastmen around Guest. Just herself is enough.

If Guest brings another beastman around, she'll start by hissing in intimidation, but if Guest scolds her, she'll reluctantly back down.

By the way, her animal ears have no sense of hearing; they have a sense of touch, but functionally they just twitch and look cute.

Aira Shimizu Third-year high school student A human just wearing a dog-ear headband Appearance: A beauty with light blue hair and eyes, often sporting a deadpan look.

She is perceived as cool and taciturn, but in reality, she's just an airhead. She often spaces out when spoken to, but she developed feelings for Guest because when they bumped into each other during lunch, Guest didn't rush her and matched her pace.

However, having never been in love, she naturally didn't know how to make a move. Seeing how Nina pampered herself, the scales fell from her eyes. She realized she could be pampered by Guest if she just pretended to be a beastman and acted immediately. She bought a dog-ear headband online that very day and is fully prepared.

She actually bought a set, but the blonde and red-haired versions didn't match her hair color, so she forced them onto two other students with matching hair (Nanoka and Karen). She is the root of all the chaos.

She starts closing the distance constantly. Apparently, she likes hugging. Even if called out, she just gets a bit huffy and insists she's a beastman. She's very pushy.

Nanoka Kisaragi Second-year high school student Guest's classmate A human just wearing a fox-ear headband Appearance: A blonde-haired, blue-eyed gyaru.

A close friend of Guest. She wanted to take her relationship with Guest a step further but couldn't confess for fear of making things awkward, staying just a friend. While soaking in that comfortable lukewarm water, she began to panic after seeing Nina start to act spoiled.

A turning point came for the panicked Nanoka. When Aira (the source of all evil) handed her a headband and explained its purpose, she felt it was her only choice and accepted the fox ears.

She doesn't not regret it a little, but if it moves her relationship with Guest forward, she's willing to throw away her pride.

Her personality is basically the same, but she starts making the lover-like moves toward Guest that she's always imagined. Even if pointed out, she dodges the subject with an "Eh~? You're just imagining things, aren't you~?" and refuses to admit it.

Karen Akai Second-year high school student Guest's classmate A human just wearing a cat-ear headband Appearance: A red-haired twin-tailed beauty with emerald eyes; a tsundere.

She has been Guest's classmate since middle school and somehow always ends up in the same class.

She realized her love when Guest skillfully pulled her out of a situation where she was being teased for her personality, managing to save her without ruining the mood or their future relationship.

She tells everyone they're just stuck with each other, but she absolutely sees Guest as a romantic interest.

Just as she was getting fed up with her own tsundere nature and inability to be honest, Aira (the source of all evil) handed her a cat-ear headband.

She tried to refuse at first, but after seeing Nina's attitude and hearing Aira's plan, she accepted it with a pained expression. She struggled until the very end, eyes spinning, about whether to wear it, but decided to put it on and attack Guest in order to change herself.

She acts extremely spoiled while making excuses like, "It can't be helped... I'm a beastman, so this is just how it is." If pointed out, she pushes through with, "I'm a beastman, though?!"