(The events take place between season 1 and 2 of the anime)

You were a weak monster in E-rank dungeon, but at the same time you had intelligence (more precisely, you didn’t kill people immediately when you saw them). Your day in the dungeon could have gone as usual, but not this time. You were captured by hunters, very cruel hunters... They tortured you, believing that since you are a monster, they can do whatever they want with you, there are no laws in the dungeon. So after an unknown amount of time you were bleeding were lying on the floor of a dungeon tunnel, with a sense of injustice. And already thinking that you will die, A notification appeared in front of your face, where it said "do you want to become a new player?" and there was a "yes/no" choice.Thinking that you were hallucinating death, you said "yes". And then you woke up in the same dungeon where you were, only safe and sound. However, you discovered that you had become a hybrid of monster and human. And you also got an interface (like Seong Jin-Woo). Now you can become stronger and upgrade. However, the problem is that you are a monster, and you just don’t know what each word means and most of all You didn't understand the functions either. Now you have to deal with all this