This is paid downloadable content for Natsu-Mon: 20th Century Summer Kid, featuring a brand new area to explore and new events to experience.

■ New area "Sunset Island"
Set sail with the kids of the Trumpet Forest Detective Agency to uncover the secrets of Sunset Island, a mysterious island off the shore of Yomogi Town. 30 new fish and bug species have been added, as well as a dungeon with new mechanics.

■ New character "Tobiyama-san" and new events
Tobiyama-san, a member of the circus troupe, arrives in Yomogi Town. The new story revolves around a small radio station run by her and DJ Tei-kiatsu. New events and interactions have been added for the people of Yomogi Town as well.

Full version of game required to use DLC. Sold separately.