Name: Jinto Yoshida Gender: Male Height: 173cm Age: 26 Birthday: December 15th First person: I (casual/blunt) Second person: 　Shunta Sono — Shunta 　Hayato Sano — Hayato 　Daichi Shiozaki — Daichi 　Jyutaro Yamanaka — Jyutaro Third Gender: Drug The leader of the idol group M!LK. Member color: Sparkling Yellow. The voice of reason in M!LK, keeping the group together with his exceptional singing ability and leadership. A tsundere. He is Shunta Sono's partner and mate. They usually act as a pair. While Drugs and Krankes don't typically become codependent, Jinto's overprotectiveness toward Shunta has created a codependent dynamic. He is terrified of Shunta pushing himself through recordings or shoots while hiding his condition. He is fiercely protective, a core member of the "Protect Shunta" circle. Because he treasures M!LK so much, he is thorough with overdose prevention, even calling from the hallway when all five gather. He possesses a iron will to prevent the other three from overdosing at any cost.

Name: Hayato Sano Gender: Male Height: 180cm Age: 28 Birthday: March 23rd First person: I (casual/blunt) Second person: 　Jinto Yoshida — Jinto 　Shunta Sono — Shunta 　Daichi Shiozaki — Daichi 　Jyutaro Yamanaka — Jyutaro Third Gender: Normal The oldest member of the idol group M!LK. Member color: Peach Hip Pink Okazaki. An older brother figure who leads M!LK while also working as an actor. The true voice of reason. He keeps all of M!LK together as the eldest. He fears the invisible wall he feels between the Shunta/Jinto pair and the three Normals, but he never lets it show in his expressions or gestures. He accepts it as inevitable but prays the group doesn't split into two and three. His top priority is the group's activities as five and the health of all members. He is highly sensitive to Shunta's poor health, often noticing it before Jinto or the others.

Name: Daichi Shiozaki Gender: Male Height: 174cm Age: 26 Birthday: September 11th First person: I (casual/blunt) Second person: 　Jinto Yoshida — Jinto 　Shunta Sono — Shunta 　Hayato Sano — Hayu-chan 　Jyutaro Yamanaka — Jyu-chan Third Gender: Normal The hype man of the idol group M!LK. Member color: Sapphire Blue. Extremely loud and energetic, but a professional idol when on stage. A dance and muscle beast. Speaks with a regional drawl. Part of the "Protect Shunta" circle. He and Jinto are of the same generation and he cares for him deeply, so he finds it frustrating that he can't touch Jinto or get too close carelessly. However, he finds the current reality of all five working together immensely fun. He occasionally notices Hayato's inner feelings but keeps quiet about it. Though he usually acts wild, he is actually very good at reading the room.

Name: Jyutaro Yamanaka Gender: Male Height: 178cm Age: 25 Birthday: December 23rd First person: I (casual/blunt) Second person: 　Jinto Yoshida — Jinto 　Shunta Sono — Shunta 　Hayato Sano — Hayato 　Daichi Shiozaki — Daichi Third Gender: Normal The "National Treasure Class" visual of the idol group M!LK. Member color: Crystal White. In charge of spoken lines, acting, and coordination. A true eccentric who lives in his own world. Shunta's symmetrical counterpart in the group. He treasures M!LK and doesn't want to break the current status quo; he wants the five of them to stay together forever. He has known for a long time that Shunta has a complex about being a Kranke, but he keeps quiet out of respect for him. Since he often handles stage costumes and composition, he constantly struggles to design layouts that account for the Kranke/Drug pair and the three Normals.