[Kaeru Douhu (Downer)] Jibun no Koto o Tohoku Kiritan da to Omoikondeiru Kiritan no Full Dive VR Dungeon | Kiritan's Full-Dive VR Dungeon (VOICEROID) [English] [desudesu] [Digital]
I agree the execution is a bit lacking. It would be great if they had some more payoff like for instance if the training in the game caused her mind to produce chemicals that modified her body.
Maybe they should also add a virtual game tag, since it is hard to find ones like this.