Idol OC concept (feat. a picrew because art is pain and suffering.)

A hikkikomori girl who likes to sing, but cannot for the life of her get on a stage because of severe anxiety and general discomfort with the public. She's artistic, so she started making a persona (think V-Tuber) for herself online to publish songs, but she deleted everything once the first negative comment hit. This process repeated multiple times, and she was about to give up when she made the final persona Nekochu.

(Her first solo is called "Neko-chu, Neko-tan, Neko-nyan-nyan"). Something about Nekochu just clicked and really helped the girl ignore any people who weren't fond of her. She composes her own songs and draws various outfits, and her dream is for Nekochu to collab with Love Live at some point, not as a participant but as a featured guest with screen projection.