Miko (Miori Takimoto) is a 20-year-old girl. She is pure, but prone to make mistakes. Since her father, who was a composer, died, she stayed at orphanage with her twin brother Mio Sakuraba (Miori Takimoto). Now she is at a convent dreaming of becoming a nun. But, one day, Mabuchi asks her to join A.N.JELL instead of her twin brother Mio who fought. Ren Katsuragi (Yuta Tamamori) is 23 years old. He is self-centered and often nervous. His father is a famous conductor. Ren is a perfectionist and musical genius. He is very clear about what he likes and doesn't like. At first, Ren is against Mio becoming a member of A.N.JELL. Shu Fujishiro (Taisuke Fujigaya) ) is a 23-year-old guitarist. He is soft and generous. His personality is the opposite of Ren Katsuragi. He is also as popular as Ren Katsuragi. He raises herbs and likes to drink herbal tea during breaks. He is the first one to realize that Mio is different. Yuki Hongo (Hikaru Yaotome) is 21 years old. He is the drummer for A.N.JELL. Yuki likes hanging around people and is bright. He also makes the mood around the band bright. In real life he is like a boy, but on stage he shows a tougher side. His tough persona makes people crazy about him. Yuki totally trusts Ren and Shu, so he doesn't like Mio, because he thinks Mio makes Ren nervous.