Kisses that come out of nowhere are strange, but Fuuko has kissed people on the cheek before to show how much Fuuko loves them and it fit in perfectly.

[Too bad Nagisa doesn't remember that kiss or anything about her at all. Damn memories.]

If he made any move on Fuuko's lips then Fuuko couldn't be held responsible if the starfish decided to smack Masaomi-san across the face!!