Because it kinda is ^^ They even got composers from Jet Set Radio to do music for the game. Also fun fact Raptor is voiced by Curtis Arnott aka Takahata (from Team Four Star, also now a Vtuber and a buddy of Haruka)
She is probably going to be luke Haruka and GEEGA if/when she joins as in already doing a lot of stuff with them and many people first hear of them from vshojo collabs
I haven't seen any content creator (well, the really popular ones at least) play Lethal League ever since STAR_ put up his Lethal League video. And I love every bit of this.