This is one of my favourite parts of the episode. Why? you might be wondering, since it seems so nondescript.
Makoto is describing how much he loved teaching the kids to swim, and how happy he was when Hayato learned to do backstroke.
So Haru is picturing Makoto while he was coaching those children, and after that flashback finishes Haru’s expression softens and you can tell (despite his mouth out of frame) that he is smiling so fondly.
And I don’t know how to explain it, but that moment I can just read Haru’s thoughts like, “That’s perfect, Makoto’s perfect, I love Makoto.”
Pirate!England _(:3 」∠)_
He must have been missing his great old days
He seems kinda shy, but he’s cute!