Season 1, Episode 11 when Cocoa secretly gives a present to Chino while she's sleeping. A cut to the doorway then shows Chino's father who was also about to give his daughter a present as well. Though Cocoa falling asleep next to her ruins the surprise a little, Chino appreciates the thoughts Cocoa had in doing this. Cocoa also receives a present as well, presumably from Chino's father, and is completely shocked at it.
Season 2, Episode 6: Mocha is depressed when Cocoa avoids her for the latter part of her stay, right up until the last day. As Mocha prepares to leave, Cocoa reveals that she'd prepared a whole party to cheer her up, and even invited Mocha's favorite author to the festivities. The moment is perhaps lessened because Cocoa was the cause of Mocha's depression in the first place, but the sentiment is there.
