A BoysLoveGenre manga by Yamamoto Kotetsuko.

Ordinary policeman [[NiceGuy Ueda Tomoharu]] caught an [[PantyThief underwear thief]] red-handed and encountered one of the people the thief stole from. The next day, he was confessed to by over-the-top {{Yakuza}} Gotouda Aki, who turned out to be the person he met the day before. They started dating after some further hijinks, and Ueda's quiet and normal life [[HilarityEnsues was gone forever]].

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!!This series provides examples of
* BewareTheNiceOnes: Ueda. Being nice does not mean he will compromise what he thinks is right. He is also a more than capable fighter so it is not a good idea to piss him off.
* BusmansHoliday: Even when off duty, Ueda just [[ChronicHeroSyndrome can't ignore a person in trouble]]. Luckily for him, Aki finds that endearing.
* CrazyJealousGuy: Both Aki and Ueda. Aki is vocal in his clinginess but it's Ueda [[BewareTheNiceOnes whose jealousy people should watch out for]]. He is quiet and reserved but everyone is scared of him when he's in a bad mood.
* EvenTheGuysWantHim: Aki, to Ueda's annoyance.
* FairCop: Ueda.
* ManChild: Aki. Impulsive, stubborn, and at times insensitive.
* NeighbourhoodFriendlyGangsters: Aki's Yakuza-ness is confined to his bad fashion sense (which even other yakuza find weird) and rude speech manners. He is actually a decent guy. Other gang members are rowdy but do not do anything evil, at least onscreen. After some initial friction, Ueda managed to earn their respect.
* NervesOfSteel: Ueda almost never loses his calmness. He could stare down a katana pointed at him and remained impeccably polite when kidnapped by a yakuza boss.
* NiceGuy: Ueda. He can get along with everyone (sans criminals he caught red-handed, of course) and is a textbook example of ChronicHeroSyndrome. It's his main appeal.
* OpenMindedParent: Aki's parents do not bat an eyelash when their son falls for another guy. Being {{yakuza}}, they're more miffed that the person in question is a policeman of all things, but take a liking to Ueda nonetheless.
** In one of the side stories, an elder son tells his parents he wants to move out because of his job, but actually he's starting to lose control over his feelings for his younger stepbrother. His parents promptly call him out and say it's okay.