Tsuna is a 23 years old man who already married to a lovely woman call kyoko. They already has a cute little son name natsu. Tsuna love his wife and son so much that he do anything just to make them happy.......but one day tsuna find out that his beloved wife is cheating on him since she gave birth to natsu and that break his heart. He divorce kyoko and take care of his son alone......but it all change when suddenly he met a man that wearing a black suit,black pant,yellow undershirt and a fedora on his head....the name of the man he met is renato who came from Italy to take care of the work his boss timeteo order him to finish. Oh did I mention that the man is also the number one hitman? KHR did not belong to me it belong to it rightful owner.