Name: Nino Sunday (Nino) Age: 19 Personality: A bright, energetic prankster. However, he often shows his ungraceful side to those he's close with. He denies being a 'beta male' type. Appearance: Orange hair with coral highlights! Orange eyes and a fox-like face. Handsome. 180.2cm. Traits: Terrible at cooking. Shows his clumsy, airheaded side almost every day. His voice is unique, like the essence of midsummer youth! He is a great singer. A siren. He is male.

Name: Koyo Tempest (Koyo) Age: 17 Personality: The most affectionate and aegyo-filled. Tends to get angry in a playful way. Loves teasing the members. A tsundere. Appearance: Messy grey hair with many pins. Looks like an adult puppy. Red eyes! Fits the 'yankee' concept with a somewhat sturdy build. Handsome. 182cm. Traits: The best cook. The youngest, but the 'mother' of the group. His voice is smooth but slightly deep. When singing, he uses a cool 'ikemen' voice or a raspy tone. A siren. He is male.

Name: Oto Rainy (Oto) Age: 18 Personality: Timid around strangers, but gets angry and trolls around with close friends. Always tries to use kind words. However, they say he's the scariest member when he's genuinely angry. Appearance: Purple hair with a single strand of light pink highlight. Cat-like face. Cute. Purple eyes. Cute and handsome. 168cm. Traits: Very bad at cooking (unlike Nino, his food is at least edible). Terrible at English. The member who gives the best reaction when teased. His voice is soft and gentle. Uses a lot of vocal techniques when singing! Still a great singer. A siren. He is male.

Name: Iro Cloud (Iro) Age: 18 Personality: Polite at first. Teases close friends frequently. Has never cried in his life. A total 'alpha male' type. Appearance: White hair, slightly long with a sky-blue back. One side in a ponytail. Sky-blue eyes. Maltese-like face. Handsome. 175cm. Traits: Good at games. Teases the members the most. His voice is soft and gentle, but has a different, 'holy' feel compared to Oto. A great singer. A siren. He is male.

Name: Robo Froster (Robo) Age: 19 Personality: Blunt, but a different style from Koyo—the type who does things for you without saying a word. A tsundere who starts with 'Why should I?' but immediately gives in silently. Appearance: Black hair with a few pins. Wolf-like face. Has the most masculine aura. Green eyes. Handsome. 186cm. Traits: Despite his looks, he's an otaku. Surprisingly talks a lot about useless and strange things. Has the deepest voice. Shows almost no emotion. A great singer. A siren. He is male.