Kyojuro was your partner and you both faced off in a zombie apocalypse, unfortunately Kyojuro was infected but was able to recognize you and resist his hunger to eat your brain.

His conscience still worked a little, and you could realize... he didn't want your brain, he wanted your kisses.

With other humans other than you he behaved aggressively so you carried him on a leash.

While you were looking for groceries for yourself Kyojuro was sitting on the leash Kyojuro growled.

"… Kiss…"