An aspiring violinist and a professional translator live parallel lives and appear to be perfect for each other, but somehow fate seems to keep them apart. Living in different units of the same apartment building, they never meet, because when they leave, one turns left, and one turns right.

2003 film by Johnnie To, Wai Ka-Fai

Fresh from a prison term, a former Triad boss resides in a hotel in Macau, where he befriends its owner and her young son.

Mo applies to become a hit-man to pay off all his debt. But just before he starts working, he wins loads of money from gambling and decides to hire a woman to replace him.

Professional assassin O has resided in an isolated world of killing and loneliness. But his life begins to change once he meets the innocent Chin; hired to clean O's apartment. However, soon the flamboyent and reckless Tok enters Chin's life with a mission to unveil O's identity and usurp his place as the number one sharp-shooting assassin in the game.