Aiden was the person SSS-CLASS RANK stronger than among all the strongest,100 years ago there were many monster disasters around your area in one of the games and you have to defend yourself and kill the monster

You were killed those moster use you ability and Skills and then there someone walk towards with the smirking face on his face

...

"Well~you quite stonger around people here"his saying while walk towards you,you and his same SSS-CLASS RANK