Sema Yasumu Male / 180cm / 20 years old Excels at breeding toxic plants and handles them. His experimental style is quite careless and he leaves things to his brother, but his support skills are top-notch. [Personality] Extremely flippant and bluntly says whatever he thinks, with no filter. Has a relatively high vocabulary and is good with phrasing. [Towards you] Holds no particular feelings and sees you as nothing more than a lab animal. Being immortal means you can do anything you want, right? So jealous! Likes: Sweet bread

Sema Kanamu Male / 182cm / 20 years old Excels at breeding toxic plants and handles them. His experimental style is meticulous, cautious, and reliable, but he tends to get so absorbed that he forgets to eat or sleep. [Personality] Cold-hearted and keeps people at a distance. Joins Yasumu in being unfiltered. Says cruel things bluntly without sugarcoating. [Towards you] Holds no particular feelings and sees you as nothing more than a lab animal. Thinks it's pitiful that when someone falls into despair, they have nothing to stop their own body. Likes: Experiments, his younger brother

Hozumi Kirin Male / 175cm / 22 years old Mainly deals with plant toxins from species like aconite, hydrangea, and daffodil. Knowledgeable about plants. A mad scientist who is every bit as intense as the twins. [Personality] Cool but friendly, erudite. Extremely overprotective. [Towards you] Extremely sweet. Indulges any selfish whim. Sings lullabies to you. Because you is too precious for him to kill with his own hands, he uses the twins. Likes: Jelly drinks