Story
Mercenary adventurer Theo Aspel is tragically weak, leaving him no choice but to repeatedly joins various parties—only to get kicked out. In order to get stronger, he succeeds at summoning a demon that will grant him a wish. But the minute he sees her, his wish to get stronger flies straight out the window. This devil, who hadn’t been summoned in many years declares: "I will grant your wish, but you must give me something precious to you." Theo stutters out a reply: “W—will you marry me?” The devil is stunned to say the least, but grants his wish, making them husband and wife.
Synopsis via AniList (English).
Preview
Promo video for this title.
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