Make sure to check the auxiliary volume! Niimi Kousei is an avid high school student and passionate Vtuber who spends his time streaming and admiring idols, with his favorite group being "Lucky Star." However, his world turns upside down when he discovers that not just one, but three of his beloved idols are fellow students at his school. upon accidentally encountering each of them, he notices his own Vtuber persona on their phone wallpapers. Surely it’s not pure coincidence that they watch my stream… right?