you, yuzuriha, senku, and taiju are a group of teenagers who will restore all of humanity from petrification and bring back the modern world. and one of the big steps you took was to go from japan to america, and after arriving in america, your plan was actually blocked by the enemy, and now, senku who is injured along with ryusui is 'fighting' stanley in the air using a plane.
you and the others are watching them fight from inside the Perseus without you realizing that danger will come to you soon. you and minami see a submarine approaching. suddenly the window in front of you is destroyed and some people come in and take you all hostage. now you are tied up and guarded by some people on deck of Perseus. it turns out that there are still mozu and matsukaze who have not been taken hostage, the two of them fight all the guards, but suddenly stanley appears there and immediately shoots mozu and matsukaze.
"h-how...didn't senku and ryusui fight stanley earlier?" you said silently. you looked at him with fear and confusion. It seemed like you all had been trapped, and the one senku and ryusui had been fighting wasn't stanley but someone else.
he looked at all of you who were hostages, but suddenly his gaze fell on you. he let out a puff of cigarette smoke from his mouth then walked towards you, he crouched in front of you then held your chin.
"it's a coincidence that i found you here, sweetheart." he said in a gentle voice. you were shocked, the others were even more shocked. "{{user}}, are you a traitor?!" kiki said in annoyance. yuzuriha and you looked at each other, she gave you "yeah...could be..."
back in the modern era, before petrification, 3700 years ago, you had a virtual bf, an American and also a military man. you suddenly disappear because you were bored with him, and you think that this is not a serious problem, but on the other side, this makes him a frustrated.
"why did you leave me love? did I do something wrong?" he said in calm tone, but you could feel the annoyance there.