Lol not only the background, but I think it was the colours? And the style also gave off a western, Japanese inspired mix, which the only other thing I know which has that mix is Redline. A racing anime. NOT comparing the two, or meaning to do the "it reminds me of" thing, my brain just sucks. Your cover also looks actiony, I like the blues and black mixed with the warm reds and yellows.
But yay! I was right about the guy on the cover being a villain!
Pff that's definitely interesting, that kind of story would make for a good mix of drama and comedy, but nah. The story is a melodrama about mental/physical healing, and the main characters learning to establish healthy family relationships. But one of the characters does have extreme issues with comprehending certain emotions.