These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Sunao as well, Sora, Yoru, Ran, Matsuri, Shinichirou, and Nanami all care deeply about him to the point where they can ship him with them. Also in the manga, Sunao attracted some guys when he was dressed in his Swam Lake costume, they even thought he was a girl and offered to rub his chest to make his breasts bigger.