Obviously idk how genyas hybrid will work but if it's anything like dsrpg2 and it has 3/4 moves then I think this is a good way to implement demon eating, you have to farm demons in the normal world, every boss that has a demon art drops some flesh, and the 3 base moves would be,
1: 1 shot forward, press again to trigger second shot
2: 2 dash slices forward, if thoes hit it does a third sword attack piercing the enemy and holding them up into the air where you shoot them in the head with ur shotgun which makes them fly off the blade
3: you throw your blade which moves slowly the the air but then you can press ur first move to shoot the sword and make it fly towards ur opponent at high speeds
The stuns and whatever will all obviously be ur choice
And for the demon eating mechanic, u can eat demons to change ur first and third attacks effects
One piece of flesh lasts 2 minutes
Normal demons (no bda)
25% Regen buff, 5% more damage on all attacks (all demons with bda will give this passive buff)
Yahaba flesh: you can press H (or any special key) that will make any of ur ranged moves auto track (has a 15 sec CD)
Susumaru flesh: all ur bullets are now temaris, you do 25% more dmg with bullets but it has a 25% more CD and a 0.5+ wind up
This is all as idk what other demon bosses will be added