Waiwai

Waiwai (わいわい), who streams as YY, is a Japanese YouTuber and Twitch streamer, born on 27 March 1988, who has been active since April 2009. He is a streamer member of the Japanese group Crazy Raccoon, which he joined in August 2022, and he is also known by the nickname "Oitan" and has served as an MC. On his YouTube channel, YY channel, he posts Japanese-language let's play commentary, mainly on PC games including Steam titles, free games and horror games; it had about 586,000 subscribers in June 2025.