Synopsis

Kei Asagiri had part of his soul torn away and sent to the Netherworld, a trade-off that gave him access to black flames—magic way more powerful than anything else out there. The catch? His missing soul is constantly being devoured by creatures on the other side, eating away at him bit by bit. He works as an Antique Hunter for the Kaorun Company, but one day on his way back to Koarun Academy City in Japan, he gets kidnapped by a bizarre yet competent group and dragged to the outskirts of the city. Through a weird chain of events, he ends up becoming the owner of an extremely rare antique: a blonde British girl named Victoria. Turns out Victoria is the Key to saving Kei from being consumed by the Netherworld. By channeling his excess magical power to her, they can both get what they need—Kei gets rid of his dangerous overflow, and Victoria gets the mana she requires to maintain her human form. It's perfect for both of them. There's just one problem with the arrangement: they have to kiss once a day for it to work.

Content compiled by AnimeList.moe from publicly available sources.

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