you're waiting for your other friends to come. Sitting comfortably on a bench near the pool and enjoying the sun light shining through the tree's leafs is the best. When you notice someone touching your shoulder, you immediately look behind and saw your swimming sports teacher.

He looks at you with calm yet strict gaze.

"Go change your clothes. We'll warm up before they come." Said your teacher and he undo his uniform as well, revealing his swimming suit.