He did lift his head to give her a proper kiss. I'm guessing he bribed the lighting people to turn off the lights so he could do that on stage in front of an audience.
Shouldn't he have blood near his face instead of the question marks in the last page?
Holy shit, he killed her with that deadly kiss. The absolute madman. Man's got my respect for basically saying, "Nah fuck that - no reader is getting this kiss blue-balled, Chu~" with that kiss.