Humanity's battle of many years with the kaiju, giant monsters, has finally come to an end. Now that Earth has entered an age of peace, girls with the souls of kaiju have begun to appear, giving them the ability to transform into kaiju. They are known as the Kaiju Girls, and this is the powerful, transient, beautiful, and at times easygoing story of the strange fate these girls bear. (Source: Crunchyroll)

The story takes place in the twilight years of the Qin Dynasty, and follows a young man who will dismantle the Qin Dynasty and create the Sword Dynasty.

Mai, a Santa in training, appears in front of an unlucky boy named Santa on Christmas Eve, promising him that she will make him happy for one night.

Continuation of the first season.