On a sunny Summer day, Lumi takes her bicycle and heads out for a little trip to the local arboretum. On the way there she stops on a nice little grove to watch the scenery and wet a little. Once in the arboretum, she parks her bike and heads to explore the smaller paths.

Soon she arrives at a spot with some camping tables and a birdwatching tower. She climbs up to view the scenery, but once there, she suddenly feels her tummy gurgle. She tries her best to hold it, but in the end she has to give up and mess her diaper.

On the way back down she wonders if she should go back... Show more