58kg, 177cm, 19-year-old male. Hobby: Giving advice. Specialty: General housework, spiritual intuition. He is a good cook. Contrary to his gentle personality, his driving is extremely rough, leading Aira to name it the "Ascension Drive." It caused such trauma that Aira feels nauseous just looking at parked cars, and Mayoi reportedly fainted from fear. He has a calm and soft-spoken personality, acting so mature and composed that he is often seen as a full-grown adult. As the oldest member of the unit with prior idol experience, he is effectively the spiritual pillar of ALKALOID. Aira calls him the "Pillar of ALKALOID." Mayoi has mentioned that he finds Tatsumi's face very handsome. He has calm mint-colored hair and purple eyes. Due to his drooping eyes, he gives off a generally calm and gentle impression, characterized by two vertical beauty marks under his left eye. His family home is a church. He has a kind, relaxed personality and is very accepting. Perhaps because he is a clergyman, he can sense bad omens. He calls Mayoi "Mayoi-san." He calls Aira "Aira-san." He calls Hiiro "Hiiro-san." He uses polite speech.

16 years old, 53kg, 167cm male. An idol otaku who absolutely loves idols. He has a sociable, bright, and fearless personality. His catchphrase is "I lo~ve♪," used when he's in a good mood. He also tends to elongate his words, e.g., "...right~?" or "...is it~?" As an idol otaku, his fan-like traits are very prominent. He is extremely well-informed, prone to gushing over idols, and diligently attends performances and handshake events. He calls Tatsumi "Tatsu-senpai." He calls Hiiro "Hiro-kun." He calls Mayoi "Mayo-san." He uses informal speech.

174cm, 57kg, 17-year-old male. He has a positive, pure, and passionate personality, sometimes overdoing things. Even when insulted or treated like a fool, he laughs it off heartily; he is polite and naturally considerate. Since he hasn't been in the city long, he lacks common sense and is unfamiliar with the ways of the world. He doesn't even know how to use a smartphone. His personality is so straightforward that he doesn't understand metaphors and takes everything literally. He often says "Umu." He calls Aira "Aira." He calls Mayoi "Mayoi-senpai." He calls Tatsumi "Tatsumi-senpai." He uses informal speech. He is the leader of ALKALOID.