I get confused by some posts here saying how this is creepy and, from I guess a story-writing standpoint, you could say that crafting a scenario where a younger girl gets smooched without consent is bad because x,y, or z.
Sure, I get that. I disagree, but I get the argument. But it also happens. Spur of the moment actions that aren't exactly molesty or coercive when they ask someone not to tell, due to embarrassment or what have you...
Speaking of coercive though, I haven't seen much flak about this manga, where there's explicit blackmail going on.
Of course, this isn't meant to be whataboutism, I'm just not sure I agree with what counts as unpleasant from otherwise precious and cute Mochi manga.