The second half of episode 207. Momoka's mom promising to come visit before the last cherry blossom falls from a tree, Keroro does his best to keep them from falling, but of course he fails. Then a storm rolls in, and the platoon, plus the Hinata siblings do their best to keep a protective fort around it...and fail again. Then Fuyuki remembers the letter her mom sent, and Momoka finds her under another tree, still in full bloom, and both are happily reunited for the day. The real heartwarming moment comes when we find out why this one tree is still in bloom. Momoka's dad superglued the leaves to the tree, and we get this quote from the narrator, a cute play on the Running Gag of him naming whatever astronomical sum went into paying for the Nishizawa family's schemes:
Narrator: Price of the superglue used by Baio: Priceless.