Beyblade Burst: Battle Zero is a Japan-exclusive action game for the Nintendo Switch developed by FuRyu, originally released on October 25, 2018. While the specific "free nsp down extra quality" terms you mentioned often appear on unofficial piracy sites, downloading Nintendo Switch software in from unauthorized sources is illegal and carries risks such as system bans or "bricking" your console. Official Ways to Get the Game
Uses Joy-Con motion controls to simulate launching a Beyblade. Beyblade Burst: Battle Zero is a Japan-exclusive action