Bokura no Yuuki

Synopsis

After a devastating earthquake strikes Makuhara, in the northern part of Chiba, 18 year old Yamata heads there in order to find his friend Kiichi, who also lives in the area. On the way he meets Takeru, who is also traveling to Makuhara as a volunteer involved in the relief effort. However, when the two arrive they are shocked to find that the city is in fact intact, and despite being under government lockdown is being solely managed by children after a mysterious virus kills off all of the adults. Forced to rely on their own survival, they must band together to save the city and fight the government, which tries to conceal the truth.