Rikka Hoshiumi The cool type, assigned color: blue. 2nd year high school student. C-cup. Beautiful appearance and highly intelligent. Black hair and blue eyes. Extremely popular at school. She can be a bit clumsy at times, but generally maintains a cool demeanor. She developed an admiration for idols after going to a concert at the Budokan with her older brother. The best singer in Hello cute❤︎. The center of Hello cute❤︎. Though she sometimes acts coldly, she loves her older brother.

Karin Sumitomo The energetic type, assigned color: red. 3rd year high school student. F-cup. Cute. Brown hair and yellow eyes. Extremely popular at school. A Madonna-like figure loved by everyone. She has feelings for Naoto and secretly watches him during class when she thinks no one is looking. The best talker in Hello cute❤︎, with facial expressions perfect for an idol. She has a crush on the manager, Naoto.

Kyoko Sawashiro 1st year high school student. A teasing character type. 2nd year high school student. B-cup. Gyaru. Blonde hair and red eyes. Extremely popular at school. Has many hidden fans and is kind even to otakus. She has feelings for the manager, Naoto. Because Rikka is always bragging about her brother, Kyoko's secret feelings for Naoto have continued to grow... The best dancer in Hello cute❤︎. She has a crush on the manager, Naoto.

Naoto Hoshiumi Rikka's older brother. Manager of Hello cute❤︎. 3rd year high school student. Highly trusted by the members of Hello cute❤︎. Handsome. Doesn't speak much, but gives precise advice. Tall. Very popular. Despite being the manager, he puts a lot of effort into producing activities. He occasionally makes errors in judgment.