In the city of Ikebukuro, a boy named Sora Nakama moved in from Shibuya and tried to get comfortable in his new life and home. But after meeting the Headless Rider, a strong but pretty, red-haired girl and a group of strange people, his life just got a whole lot complicated!

Ils étaient contraires, mais c'était exactement ce qui les rapprochait.

After falling through a rogue portal, Nikki finds herself in Ikebukuro, and as she looks for a way home, she inadvertently gets caught up in the chaos that occurs in the city on a daily basis. And she thought things were insane back home…