It's Naru's birthday, and Handa wants to present her with a new rhinoceros beetle. However, Kenta not only refuses to help him catch one, but also declares a battle to get Naru the best bug! Later, Handa is invited along for a visit to the Kotoishi family gravesite, but finds the local Obon customs unusually cheerful.

With his calligraphy exhibition entry finished, Handa wants to return to the island and the people he cares about there. Unfortunately, his mom is dead set against it. How will he convince her to let him go?