"The highly anticipated collaboration is finally here! UWU X [OSHI NO KO]"

Ai is a famous idol of the group B-Komachi. At the beginning of her career, she was unsure whether she was cut out for the job because she doesn't know what it means to love someone. For Ai, lying is her way of showing love.

Ruby is Aqua's twin sister. She wants to become a famous idol out of admiration for her mum. She is very open-hearted and cheerful and quickly makes friends with others. She is hiding a big secret that only a few people know.

Aqua is Ruby's twin brother and has a pronounced sister complex. He is surrounded by a dark secret that determines his life and actions. He keeps up appearances on the outside, but his true intentions remain opaque to most people.

Kana was a celebrated child actress who got fewer and fewer jobs as she got older. At Aqua's request, she joins Ruby's idol group and begins to learn more and more about herself and her true feelings.

Memcho is a very successful YouTuber and knows exactly how to use social networks to her advantage. For her career, she pretends to be younger than she actually is. To fulfil her dream, she joins Ruby and Kana's idol group.

Akane is a talented theatre actress who is celebrated as a genius. However, she is driven to extremes by an incident and can only be saved with Aqua's help. She then takes on new challenges with renewed courage.