No way he didn't see it, people, kids included, usually hand over things like this with a photo already selected. But for series' sake, I guess I could suspend my disbelieve.
Was the kanji of panel one on page three the "chu" sound of a kiss? I was wondering because the lower panel shows Sakurai drawing her hair back, just like what was shown later when she bent down and gave the kiss.
@zerio: Upon closer inspection, it looks like Sakurai kissed him on the forehead, based upon the location of his head in the panel. The item in her right hand appears to be the edge of her purse, that Kazama's head is resting on. It's kind of hard to tell.
its actually nice to be able to see this "stranger comes up asking the main characters if they're a couple" scenario and actually have a solid reason why they ask that rather than just seeing the main characters at first glance and somehow randomly asking them.
Also nice to see the other characters get their own romance spotlighted.