Thank you for the feedback. I will admit the fact that the enemy being immune to certain element can be a bit of a difficulty curve that I didn't take in to account for less astute players. I also didn't exactly tutorialize that you can switch between characters by toggling them using the arrow keys and allow you to pick Kuronigozo's black based attacks which can neutralize the healer. I would consider adding a proper first time tutorial for Kuronigozo's mechanic. I appreciate that you took the time to play the game.
Funny thing about the Yu Yu Hakusho type design. It was made with the 90s aesthetics in mind. More closely the children anime from the 1989s to 1995s.