The Geek Ex-Hitman, Vol. 1 (manga)

The Oracle of Florence, Marco, is a legendary, peerless hitman fearedthroughout theItalian underworld, but now he's trying to build a newreputation for himself-thebiggest geek in all Japan! After gettingintroduced to the joys of otaku culture while outon a hit, Marco quicklygets so sucked in that he sets down his bloodstained mantleand moves toJapan to peacefully enjoy his new lifestyle. But he'll soon find thatevenafter turning over a new leaf, there isn't much he can do abouthow sinister he seemsto other people-especially the government agent on histail, Viviana, whose skills as aspy are surpassed only by her burningpassion for yaoi and BL...!