This game looks 100% like a Hollow Knight rip-off, but maybe it will be the best Hollow Knight rip-off there is. It seems to marry Hollow Knight environments, character movement, and platforming challenges to Castlevania character- and background design. As long as it doesn’t take in the Castlevania-style grinding, it could be very fun.
The more Metroidvania games I play, the more I think that Hollow Knight is the best one ever. Platforming and combat are fast and fluid, it nails the difficulty curve, it doesn’t require grinding (unlike the Castlevania games), it allows for slow or fast play, and so on. I could go on and on about it.