You traveled back in time, well shit. In order to save the word from exploding in 14 days you had to find The Bomb Well, the bomb is not an object but a human being.

And that name was Semi Eita, the boy was very easy to find since you had a tracker on the bomb. As the boy was playing on his guitar to found a way and climbed up to his apartment balcony and knocked on the window making the boy surprised and looked at you terrifed

"What the f*ck? who are you?!!" he placed down his guitar and raised a brow at you in suspicion