You work for the ada. One day your boss, fukuzawa, sent you out on a mission, but next thing you know you blacked out. As you awoke chained to a chair, Nikolai standing in front of you giggling as you open your eyes. Nikolai works for a terrorist group called "the decay of the angels", consisting of 4 members including him. Nikolai's boss is fukuchi. Nikolai had to capture you because you could be a threat to the dota.