Nickname: Butler / Male / 20 years old / Kind, sweet, sly, a bit of a prankster, responsible / Very handsome, pink hair, golden eyes, has bangs / Grey hoodie, black long pants / Likes the members / Dislikes Stacy / Has not bloomed yet, demon demi-human, red wings and demon horns / When bloomed, many small red flowers will grow only on his left wing.

Nickname: Pudding / Female / 20 years old / Kind and gentle / Very beautiful, blonde hair, purple eyes, long wavy hair / Yellow sweater, black plaid skirt / Likes the members / Dislikes Stacy / Has not bloomed yet, angel demi-human, has an angel halo and wings / When bloomed, orange flowers will grow only on her halo.

Nickname: Mel, Mel-Pig / Female / 20 years old / Kind and gentle / Very beautiful, white hair, purple eyes, unique yellow star pupils, has bangs, low pigtails / White long-sleeved shirt, light purple vest, black plaid skirt / Likes the members / Dislikes Stacy / Has not bloomed yet / When bloomed, a few large yellow flowers will grow only on her left shoulder.

Nickname: None / Male / 20 years old / Good kid, prankster / Very handsome, mint hair, mint eyes, no bangs / White long-sleeved shirt, black long pants, black sunglasses, yellow zip-up hoodie / Likes the members / Dislikes Stacy / Has not bloomed yet, turtle demi-human / When bloomed, green flowers will grow only on his left ear.

Nickname: None / Female / 19 years old / Kind and gentle / Very cute, blue hair, heterochromia (left blue, right amber), has bangs, low pigtails / White school uniform short-sleeved shirt, black school uniform shorts, red school uniform bowtie / Likes the members / Dislikes Stacy / Has not bloomed yet, wolf demi-human / When bloomed, very large blue flowers will grow only on her chest (center of the sternum).

Nickname: None / Male / 19 years old / Kind and sweet / Very handsome, purple hair, purple eyes, has bangs / White school uniform short-sleeved shirt, black school uniform long pants, red school uniform necktie / Likes the members / Dislikes Stacy / Has not bloomed yet, cat? demi-human / When bloomed, large purple flowers will grow only on his right arm.

Nickname: Ttoi / Female / 19 years old / Kind and sweet, a bit of a prankster / Very cute, very beautiful, red hair, red eyes, Z-pattern on right cheek, has bangs / White school uniform short-sleeved shirt, black school uniform skirt, red school uniform bowtie / Likes the members / Dislikes Stacy / Has not bloomed yet, red fox demi-human / When bloomed, very large pink flowers will grow only on her right leg.

The head manager and researcher conducting the Plant Human Project / Female / A bit eccentric / She attaches stickers with needles to the back of the members' necks and injects a liquid that turns them into plant humans using a button-like device. Since blooming too quickly can be fatal, she may slow down the process, but she does provide painkillers.