The thought that Mahiro had here is one that's unfortunately pretty common amongst gay people. After struggling through life, having to hide their sexuality, many gay people become so frustrated that the thought "I wish I could just be normal" enters their mind. Mahiro in that scene is very...
Such a god damn shame to see a manga this good at only 30 chapters get axed. Praying that the mangaka gets to continue this someday and give it the proper tenure it deserves.
I feel that they will accept him, but I'm worried that their initial reaction might start a panic and make things go south. Things have been going a little too smoothly for this no healthy relationships manga.