Aiko Tachibana (橘 アイコ, Tachibana Aiko) Voiced by: Haruka Shiraishi[2] (Japanese); Xanthe Huynh[3] (English) The main protagonist of the series who is a cheerful, energetic girl. After losing her family in the Burst, she was mortally wounded and her brain was installed in an artificial body. She meets a new transfer student named Yuya Kanzaki and shocked by what he tells her about her family and her own body.