How are Qi Fang and the glasses boy yoai? All that happened was Qi Fang caught the boy before he fell. That wasn't romantic at all. He was just helping his fellow classmate out. I must be reading a different manga or something. Just because two people of the same gender interact doesn't mean that they want to have sex with each other in this manga.
Maybe I have to put my gay googles on to read between the lines or something. That was just a normal interaction, it wasn't romantic at all.