Light Yagami a.k.a. Kira is Misa Amane's love interest in the Death Note franchise. Light was a genuis student who had become jaded with humanity. When he found the Death Note, which would allow him the ability to kill whomever's name was written in it, he set about slaughtering all the criminals he could find, earning the moniker Kira (the Japanese pronunciation of Killer). Light's genius is.. Just like Misa, Megumi didn't actually love her crush. She was obsessed with him, and thought they had a connection just because of her "love" In Misa's case she was even so blinded by her obsession she never realized Light was mistreating her. Or that without the death note he had no interest in her at all.
No. Light doesn't love anybody . . .but himself. He kills anyone who gets in his way, including his friends and family. Light knows that Misa loves him and used her as an asset because she had the.. Light loves no one but himself (he even considered killing his own sister 💀). He just saw Misa as a pawn, someone he can use for his own benefit and that's only because she had a Death Note and was toxically in love with him.