Responses
I suppose they can switch, but I get you. I thought the same xD
Maybe I would have liked it more if Shun have been top. Though, I also think this Is kinda realistic, bc a couple between two boys can switch if they want.
The taller one of the couple being top it's just something typical in bl mangas, but it's not always that way.

wait why did i think that shio was top and mio was bottom like pls TT~TT or are they switch