It's the Chinese movie remake from 2014. Follows the same plot, he's seeking revenge on the mother who abandoned him. Falls in love but he's only got so long to live. It is a movie so there will be a lot missing and may be rushed.
"Sorry I Love You" is Chinese remake for South Korean drama series "Sorry, I Love You" (2004). Gomen, Aishiteru is the Japanese remake for that same drama series.
