With Valentine's Day approaching, the gang become curious when Hibiki starts looking up how to make home-made chocolates. Determined to find out if she has a crush or not, Narumi and the others follow Hibiki to the park, where she meets up with a grumpy old man, who they assume is the one she has a crush on. When Valentine's Day arrives, Hibiki delivers chocolates to the old man, which are revealed to be azuki bean chocolates she made based on his late wife's recipe in order to fulfil her Valentine's wish, after which she shares some chocolates with her friends.