Living in Another World is gonna be a Cinch

Saudo wakes up in a new world with no memory. He is a Summoned adverturer and is supposed to fight against powerful monsters. After recieving a special skill that allows him to raise his stats at a unprecedented rate but he has to get himself hurt to activate the skill he faces the mental challenge of if he wants to use this skill. This is a huge blessing if he was a masochist.