Yuujin A，友人A（Yuujin A）, or more colloquially known as A-chan (えーちゃん), is a former Hololive staff member and a friend of Tokino Sora. A-chan has her own Live2D and 3D models and has sometimes done collaboration streams with other members. Aside from her casual appearances on live streams, she also hosted her own live streams on the official Hololive Channel ahead of major events such as the Hololive Fests.