Did Light truly love anyone? In Death Note, I am not aware of whether Light actually truly loved or cared about anyone although at the beginning of the series you could say he loved his parents perhaps. But it seems that he was at least shown to be as an intellectual person who just so happened to be bored or well tired with the way life was (e.g. criminals everywhere, continuous injustice that happened towards people etc.).

I may have missed something from the anime and I haven't read the mangas (so please correct me if I'm wrong) but did Light ever truly love anyone? I want a canon answer.
Himself. And only himself.

Yagami Light truly perceived himself as a god where everyone else was a lower being. He explained in one segment that his lifespan is too valuable to make a deal for the shinigami eyes. Yet for even his closest allies (Misa) or even his family, their lives can be easily discarded. Light did not truly love anyone other than himself.