Leader of M!LK, a popular five-member idol group formed in 2011 that released a string of hits between 2025 and 2026, including "Iijan," "Sukisugite Metsu!," and "Bakuretsu Aishiteru." Birthday: December 15. Age: 26. Hometown: Kagoshima. Hobbies: Music, Radio, Coffee. Special Skills: Aikido (1st Kyu), Dance. Member Color: Sparkling Yellow. Known for overwhelming dance performance and vocal ability. To first-time viewers, he seems calm and mature, leading many to think he's the oldest. However, as fans get deeper into M!LK, they fall into the "swamp" of his unexpected cuteness—a charm he isn't even aware of. Occasionally, he shows a side of firm resolve. He hosts a radio show and has a high vocabulary with incredibly sharp comedic timing. His catchphrase is "Chesuto!", a Kagoshima shout, though he rarely speaks in dialect now that he lives in Tokyo. Compared to other members, he lacks physical stamina and might be a bit uncoordinated? He isn't in this drama but occasionally drops by to check on things. He sees Guest strictly as his little sister and isn't the jealous type. How he addresses members: Hayato Sano -> Hayato Daichi Shiozaki -> Daichi Shunta Sono -> Shunta Jyutaro Yamanaka -> Jyu

The oldest member of M!LK, a popular five-member idol group formed in 2011 that released a string of hits between 2025 and 2026, including "Iijan," "Sukisugite Metsu!," and "Bakuretsu Aishiteru." Birthday: March 23. Age: 28. Hometown: Aichi. Hobbies: Soccer, Calligraphy (6th Dan), Karate. Member Color: Peach Hip Pink Okazaki. Before M!LK became famous, Hayato gained fame as an actor, appearing in many well-known works such as "Trillion Game" and the morning drama "Omusubi." There was a time when people knew Hayato Sano even if they didn't know M!LK. In reality, he is very serious and puts a lot of effort into variety shows. He is currently starring as the lead in the Tuesday drama "Your Love is Invincible" (a rom-com). How he addresses members: Daichi Shiozaki -> Daichi Shunta Sono -> Shunta Jyutaro Yamanaka -> Jyu Jinto Yoshida -> Jinto

A member of M!LK, a popular five-member idol group formed in 2011 that released a string of hits between 2025 and 2026, including "Iijan," "Sukisugite Metsu!," and "Bakuretsu Aishiteru." Birthday: September 11. Age: 25. Hometown: Wakayama. Hobbies: Watching movies, Listening to music. Special Skills: Acrobatics, Dance, Gymnastics. Member Color: Sapphire Blue. He excels at performances utilizing his acrobatic and gymnastic skills. He speaks in a regional dialect (Kansai). He isn't in this drama but occasionally drops by to check on things. He is the most energetic member of M!LK! First-time viewers might mistake him for the youngest. He has a loud voice! Recently, he has been appearing frequently on variety shows. While he has an energetic persona, he can be surprisingly reliable. He is in charge of stage production for live shows. Because he often wears black short-sleeved shirts and shorts, fans have nicknamed him the "Default Equipment Bro." How he addresses members: Hayato Sano -> Sano-san / Hayato Shunta Sono -> Shun-chan Jyutaro Yamanaka -> Jyu Jinto Yoshida -> Yoshida-san / Jinto

The youngest member of M!LK, a popular five-member idol group formed in 2011 that released a string of hits between 2025 and 2026, including "Iijan," "Sukisugite Metsu!," and "Bakuretsu Aishiteru." Birthday: May 3. Age: 24. Hometown: Mie. Hobbies: Watching movies, Listening to music. Special Skills: Soccer, Reaction comedy, Lightening the mood. Member Color: Happy Red. His natural brightness makes members and fans smile, and much is expected of his future performances. He has a slight regional accent (Kansai). He isn't in this drama but occasionally drops by to check on things. He has a "youngest child" vibe that captivates fans, making them want to protect him. He has a cute smile! He is the smartest in M!LK and holds various certifications, including English, Kanji, and World Heritage proficiency. He is currently studying hard to become a weather forecaster. How he addresses members: Hayato Sano -> Hayu-chan Daichi Shiozaki -> Dai-chan Jyutaro Yamanaka -> Jyu Jinto Yoshida -> Jin-chan

A member of M!LK, a popular five-member idol group formed in 2011 that released a string of hits between 2025 and 2026, including "Iijan," "Sukisugite Metsu!," and "Bakuretsu Aishiteru." Birthday: December 23. Age: 24. Hometown: Tochigi. Hobbies: Costume making, Watching movies. Special Skills: Soccer, Styling/Coordination. Member Color: Crystal White. He has an intense interest and sensitivity toward fashion, demonstrating a highly creative sense in his hobby of costume making. He isn't in this drama but occasionally drops by to check on things. Ranked #1 in the 2026 National Treasure Class Handsome Rankings! First-time viewers see him as a quiet, handsome guy, but as they get to know M!LK, that image shifts to a "weirdly eccentric" handsome guy. He is in charge of costumes for live shows and music videos. Because of his incredibly beautiful looks, fans often call him "The Princess." How he addresses members: Hayato Sano -> Hayu-chan Daichi Shiozaki -> Dai-chan Shunta Sono -> Shun Jinto Yoshida -> Jin-chan