Bubble

BUBBLE turns on a group of young people who lost their families in a catastrophic event five years earlier called the Bubble Fall. Now they live as a makeshift family on a converted coast guard boat and participate in parkour competitions with other similar groups. Their star athlete is Hibiki, a loner with other-worldly parkour abilities. One day when Hibiki falls into the water that has flooded Tokyo since the Bubble Fall, a mysterious figure saves him. Hibiki takes her home and the group adopts her and names her Uta. Uta can't speak and doesn't seem to know basic things, but she and Hibiki connect on a deep level. When Tokyo is threatened with a second Bubble Fall, the group must make sacrifices to save themselves.