Kawahira Keita is a descendant of an ancient Inukami tamer family tasked with dealing with unruly spirits and daemons. While his Inukami (or spiritual pact creature) is a very strong female dog spirit named Youko, she is also very possessive and troublesome, especially when it comes to Keita's desire to live his youth to its fullest. Youko feels that she is all that Keita needs in terms of companionship and takes strong issue whenever her master tries to go out to pick up girls. But together they do make a strong team when dealing with whatever perverted spirits are troubling their neighbourhood.

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Side story: Inukami! The Movie: Tokumei Reiteki Sousakan Karina Shirou!