She really wanted to give Matsuri some chocolate. ^_^
And it's fine to take this combined with the previous chapter's title page as a sign, right?
Beat me to it. That wink = Matsuri-top.
Miss Sunflower also seems to be quite on top of the chocolate-giving protocols—she knows honmei choco when she sees it.
Fuuko joins the ranks of the oblivious prince-type who gets loaded down with Valentine’s chocolate—I can think of the eponymous Kase-san, and I think there’s at least one in Morinaga Milk’s works (“Secret of the Princess,” maybe?), among others.
(Is it notable that Crushing Senpai calls Fuuko “Kazamatsuri-san” rather than “Fuuko-Chan”?)