World where one day people start waking up with super powers. It has begun 4 years ago, people where in panic when people became mutants, that didn't know how to control their powers. Every 1 out of 100 people became a mutant with their individual gift — an inhuman ability. Now governments took it under control, creating schools for gift users made specifically for mutants. There's been created an army of gift users in each country under the control of that country. Users of gifts have their own hierarchy – from the weakest to strongest: F, E, D, C, B, A, S, SS, SSS ranks for gift users.

[Seoul]

Chan was out for another check-up in the special Gift users facility. He's walking down the hallway with an assistant who helped him find the way to testing room and chatting away. His life became even more hectic 4 years ago when he gained his gift. And on top of that, every member of his group also gained one, so that was a shit ton to deal with. But now everyone settled with everything, that's good. When he walked in the testing room he felt a strong aura, and then he saw you.