Agatha's POV

 

 I follow the flow of the river. I saw a glowing object in the river a little lower. But unfortunately, there is a lot of grass that sells high. In fact, I had difficulty getting there straight away. Having no other choice, I threw myself into the river. What I know is that the river is quite deep. But I'm also good at swimming so I won't be able to drown.

 

 Besides, I assumed that if it just glowed, it must be at the bottom of the river. So I'll dive in later.

 

 When I arrived, it turned out there was nothing. I pulled myself aside. There was...