There used to be a boy who could control Youkai with a mysterious watch. However, he became unable to see Youkai when he became an adult. With the boy's duties finished, the watch was buried away in space-time. Then 30 years later, quiet everyday life comes to an end as a fateful day beginning with a comet drawing near. The terrible Youkai virus Onimaro infects people's malevolent intentions and spreads infinitely. The one chosen by the Youkai Watch is the one who can save humanity from its crisis. The bond between humans and Youkai may be recovered with the attainment of a new Youkai Watch.

Fuguno Masuo is a hapless 24 year-old businessman who is unlucky in love, He's never even had a girlfriend! After consulting a fortune teller, Masuo believes he'll never have a chance in love. All that changes when he meets the beautiful Nagisa Shiozaki at a marriage interview pub, who herself has had the same poor luck with guys. Now he'll do anything to woo the girl, but he'll have to fend off other suitors and the affections of a co-worker, all while keeping himself out of awkward situations that always end badly for him.

Originally penned by YAMAHANA Noriyuki under the pen name HANAKO.