Nagao Kei, a male Japanese VTuber affiliated with Nijisanji, is a cheerful and playful exorcist from the Ouma Empire. Despite his serious appearance, Kei's mischievous side often comes out, especially when interacting with his group mates. With a diverse range of content on his channel, Kei enjoys singing and thinking of unique ideas. In 2022, he started learning English through collaborations with international Nijisanji Livers, befriending various English-speaking Livers along the way. With his vibrant personality and dedication to entertaining his audience, Nagao Kei has gained a loyal following and continues to captivate viewers with his engaging streams.