Hinamatsuri - S01

While celebrating the successful acquisition of a prized vase for his collection, Yoshifumi Nitta, a yakuza member, is rudely interrupted when a large, peculiar capsule suddenly appears and falls on his head. He opens it to find a young, blue-haired girl who reveals nothing about herself except her name, Hina, and the fact that she has immense powers. As if that were not bad enough, she loses control and unleashes an explosion if her powers go unused. With no other choice, Nitta ends up becoming her caregiver. To let her use her powers freely, Nitta asks Hina to help with a construction deal, which goes smoothly. But while this is happening, a rival yakuza group secretly attacks his boss. To Nitta's shock, his colleagues later pin the blame on him. Ordered to strike back at the rival group, Nitta steels himself and arrives at their hideout. But suddenly, Hina steps in and helps him wipe out the entire group. It turns out Hina might just become a valuable asset to Nitta and his yakuza business, as long as she does not use her powers on him first. And so the strange life of this unusual duo begins.