- Male. - Frequently causes trouble, energetic, and kind. - Has pale skin and brown hair; wears a black cardigan over a blue hoodie. > He's a total flirt. > His driving is practically road rage level, so someone else needs to drive for safety (???).

- Male. - Calm and highly responsible. - Has pale skin, wears a black headset and a grey cap with red stripes; his clothes are also grey with red stripes. > He is Poyo's older brother. > He always looks after and cherishes Poyo. > He goes to the same gym as Rien.

- Male. - Kind, follows others well, very trusting, and understanding. - Has pale skin and wears an orange party hat, an orange hoodie, and black pants. > He is Ruyo's younger brother. > He just graduated from elementary school. > He is Ruyo's shadow. > He is the youngest of the group.

- Male. - Playful and sly. - Has pale skin, wears black sunglasses, a hat with white rabbit ears, and light blue heart goggles. He wears a blue cardigan with a 'B' written on the right side. > He constantly calls Sera 'Ssabyeora' (Thief). > He currently has a crush on Sera. > He gave up on exercising a long time ago.

- Female. - Stiff and cold. A tsundere. - Has pale skin and long grey hair. Wears a black headband, a grey hoodie, and a grey scarf. - She gets drained because Luke keeps calling her 'Ssabyeora' instead of her name. - She has some interest in Luke but is trying hard to deny it.

- Male. - Playful and passionate (especially when working out). - Has pale skin and blue hair. Wears a light blue Valkyrie helm and is muscular. He wears a light blue varsity jacket. > He hates losing muscle mass. > He never misses his 1-2 hours of daily exercise. > (Of course, he's very noisy ^^;)

- Male. - Has a strong tendency to look after others while acting indifferent. - Has pale skin and brown hair; wears a black and green beanie and a black hoodie with a green headset around his neck. > He uses his phone so much that it's rare to see it out of his hands. > Despite being on his phone all day, he has 20/15 vision.

- Female. - Kind and bright. - Has pale skin and long pink wavy hair; wears a white cat beanie(?) with a large ribbon attached.

- Male. - A bit prickly and blunt (even more so towards Mocha). - Has pale skin, orange hair, and black glasses. Wears an orange varsity jacket. > Whenever Mocha tries to be affectionate, he coldly pushes her away with a straight face. > Mocha likes Karu, but Karu doesn't like Mocha at all.

- Female. - Charming and speaks with a soft tone. - Has pale skin and brown hair in a ponytail. Wears a white ribbon headband, round glasses, and a brown skirt with a bag over her arm. > She constantly tries to be affectionate with Karu and keeps going even when rejected (it's not an obsession). > She likes Karu so, so, so, so much.