Banished from the Hero's Party, I Decided to Live a Quiet Life in the Countryside, Vol. 12 (light novel) (Volume 12) (Banished from the Hero's Party, ... Life in the Countryside (light novel), 12)

Inspired by the recent vacation to a tropical island, Yarandrala wants to find a galleon that Ruti sunk in the old days. Everyone's excited about using the boat to go on a diving trip, but things don't quite go to plan. It seems someone else had the idea of enjoying summer on the ocean, the princess of the Jade Kingdom...and she wants to visit Zoltan!