I didn't find Washio's POV chapter as endearing or interesting as the ones from Kotooka. I found her kinda self-centered since she only cares about ending up with Kotooka and doesn't really thinks what would happen with the only person who is supporting her good
That's what love does to us, we become selfish because our emotions and feelings ruled over us and the only thing we want is to be with that person. Moreover, Washio is heartbroken causing her thoughts to become disarray and she can't think straight. Honestly, I can relate when I was a teenager, I neglect my friend, the one who supports me because I focus too much on trying to get the attention of someone I was in love with but she likes me as a friend. But hey! I gain +1 life experience. Nowadays, I don't go, "She is rejecting me!!! I must try to find a way to catch her KOKOROOOO!!" shit. (sorry for my bad Engrish)