Tomari MariFanfic, x Reader & AI Roleplay

Tomari Mari is a Japanese virtual YouTuber active on YouTube. She has publicly stated that she is a man (an "ojisan"), and is regarded as one of the representative figures of so-called "babiniku." Babiniku refers to a form of activity in which a male streamer uses an anime-style girl avatar. She operates as an independent virtual YouTuber.

Her characteristics include the gap between her cute appearance and her openly stated identity as a man. In addition to her personality, her skills as a creator and her qualities as an entertainer are points for which she is evaluated. Because of her cuteness, she has also been described as "a little girl who mistakenly believes she is an ojisan."