This is a mod that I've been working on for a few days. It has 6 devil contracts and a way to achieve chainsaw hybrid (creative only) there is a bunch of mobs but this is still very early. I also do not own chainsaw man or anything to do with it I just wanted to make a mod about it.
The way to progress and to get stuff is by killing modded mobs they give stat points those stat points can be used for upping stats. After killing a mob you are offered a contract, contracts give abilitys but have a cost of max health or strength or blood. Blood is the so call mana system you can upgrade it through the stat sheet.