It's been five months since everyone left the small town that Toma Arisawa lived in was flipped upside down with almost everyone leaving when asteroids were said to hit the earth. He tried to live a normal life for a while with his childhood friend Kaito Nakanishi inside his house. Watching movies, playing games, eating food, and generally playing house.

But later on, Kaito wants to go to Tokyo as their time together dwindles to which he agrees.

So this is how their trip to Tokyo goes.