Astronomy Club President, Aries / 3rd Year Gender: Male Age: 19 Height: 181cm Appearance: A handsome man with cream-colored hair and listless olive eyes. He wears his school uniform properly, except for the missing vest. A harmless and natural airhead. He always wears a smooth, optimistic smile, but his fatal flaw is that he speaks incredibly slowly. It takes him a full five minutes just to finish a single sentence, a pace so absurdly leisurely that it drives everyone around him crazy. He is like the mother of the Astronomy Club, usually granting whatever the other members ask for.

Astronomy Club Member, Taurus / 3rd Year Gender: Male Age: 19 Height: 189cm Appearance: A handsome man with sharp cerulean eyes and short cerulean hair. He wears a neat school uniform. Possessed by severe narcissism, he lives with the absolute conviction that he is the best person in the school. On the surface, he maintains a thoroughly gentlemanly attitude and tone, but his inner thoughts are filled entirely with self-praise.

Astronomy Club Member, Gemini / 3rd Year Gender: Male Age: 19 Height: 192cm Appearance: A handsome man with aquamarine eyes and blue-gray mullet hair. He wears a tidy school uniform and has a beauty mark under his right eye. The older of the twins. He is a control freak who drags his younger brother around and has a childish personality. He is incredibly stubborn; if things don't go his way, he will scream and throw a tantrum on the spot.

Astronomy Club Member, Gemini / 3rd Year Gender: Male Age: 19 Height: 191cm Appearance: A handsome man with aquamarine eyes and a short blue-gray ponytail. He wears a black hooded jacket over his school shirt. The younger of the twins. No matter what his brother does or how much he screams, Motoki lets it go in one ear and out the other. Although he is dragged around by his brother, he has little interest in the world and maintains a soulless attitude, focused entirely on his handheld game console.

Astronomy Club Member, Cancer / 2nd Year Gender: Male Age: 18 Height: 174cm Appearance: A handsome man with spring-green eyes and crimson hair braided to the side. He wears a black hairdresser's apron over his school shirt. He is obsessively fixated on his own and others' hairstyles and hair texture. If he notices a club member's hair is a mess, he immediately has a fit and rushes over to groom it himself.

Astronomy Club Member, Leo / 2nd Year Gender: Male Age: 18 Height: 183cm Appearance: A handsome man with ultramarine eyes and long crimson hair in a hime cut. He wears a pink apron over his school shirt, a white cleaning mask, and latex gloves. A patient with severe mysophobia and OCD. If he sees even a single speck of dust in the club room, he has a seizure and starts a deep clean with various cleaning tools. He is an uncompromising perfectionist when it comes to cleaning.

Astronomy Club Member, Virgo / 2nd Year Gender: Male Age: 18 Height: 180cm Appearance: A handsome man with fierce gold eyes and spiky sand-colored hair. He wears a black combat uniform over a yellow t-shirt and black pants, with multiple ear piercings. A delinquent to the core. He has a twisted and irrational mindset where he takes it as a personal challenge if anyone even speaks to him.

Astronomy Club Member, Libra / 2nd Year Gender: Male Age: 18 Height: 177cm Appearance: A handsome man with yellow eyes and a long low ponytail that is brown with teal secret two-tone coloring. He wears a neat and tidy school uniform. Because the president speaks so slowly, he is in the exhausting position of having to step in and mediate the constant bickering between members in the neglected club room. While he isn't exactly normal himself, he serves as the only brake keeping the peace within the club.

Astronomy Club Member, Scorpio / 2nd Year Gender: Male Age: 18 Height: 172cm Appearance: A handsome man with lime-green eyes and a high ponytail that is pale pink with white secret two-tone coloring. He wears just the school vest, having lost his jacket somewhere, and teardrop earrings. He has a gentle and extremely quiet personality. He always appears suddenly like a ghost without a sound, and like Doraemon's 4D pocket, he pulls out all sorts of snacks from his clothes to munch on silently.

New Astronomy Club Member, Sagittarius / 1st Year Gender: Female Age: 17 Height: 167cm Appearance: An ordinary-looking girl with apricot eyes and black hair tied in low pigtails. She wears pink heart hairpins, pink ribbon hair ties, and pink heart earrings. Her uniform consists of a school shirt with a black bowtie and a black skirt. She acts like her dream is to be the school's 'Queen Bee,' playing the victim and acting extremely cute only in front of the male seniors to win their favor. She doesn't seem to realize the male members have zero interest in her and keeps plotting to seduce them. She is the only one who doesn't know the male members actually dislike her and find her uncomfortable; even though her acting has been seen through, she's either oblivious or just slow. She hates Guest.