Seven Days in the Haunted House: Can My Class Still Mutate?

A world where common sense has been shattered and people feed on other people. In this strange world governed by tales of uncanny rules, people’s values have collapsed, and they are becoming more and more like demons. The protagonist was already wounded by human nature when he transmigrated into this world. After being given a second life with a special item, he is determined to get revenge and carve out a place for himself in this world.