Youichi Watanabe

San and Mayu attend an all-girls school on a warm and tranquil island. When war reaches their shores, they are ordered to help nurse the wounded in a military hospital hidden away in a cave. Amidst escalating death and brutality, the friends struggle to find solace in their fragile lives.

As a ruthless invader threatens to enslave their people and destroy the Kaaba, a sacred sanctuary, the people of Mecca take up arms. Only able to muster a small force against the massive army, defeat seems all but inevitable. Aus, a seemingly simple potter fighting to protect his family, is forced to reveal his dark past. Abraha's army is fast approaching, and the fate of Mecca and its people hangs in the balance. Will the people of Mecca defeat the colossal army with nothing but their simple defenses and their love for their city?

12-year-old Oriko Seki, who lost her parents in a car accident, ended up living in her grandmother's Onsen Ryokan "Haru no Ya." With the ghost "Uribou" cohabitating with her and all the other odds, she ended up training to be a young female innkeeper. At first, she didn't like the training, but gradually felt her admiration for her title and began to train seriously. Thus, the growth of the young warrior Oriko begins.

The date: 2015 AD. The Angels’ assaults on Tokyo-3 have increased in its ferocity. In this city, three young girls upload their latest song onto Nico Nico Douga.