Until you return home, the field trip is not over.

This is a sequel to "I've Been Saving the World with 'Aaah'" https://ncode.syosetu.com/n2247gg/ If you don't mind, I would be grateful if you could read the above story first. After the plague that threatened the world had subsided thanks to the hero's efforts and the fruit of the sacred tree, and things had settled down to some degree. This is a story about the sacred tree boy going on his "first field trip" accompanied by the hero who came to play.