@xrogaan it's "No matter what path you lost to, as long as there is someone who will guide you to the right path by your side... perhaps a being much like devils would not come to exist in this world"
"I am very vexed" is in next panel.
@Buraindo
Nao found out about kou being a girl in chapter 30 and the situation was resolved in chapter 37
Basically, Nao saw kou getting out of girls toilet, kou ran away then nao asked nifuji and narumi on how to resolve the situation, nifuji then found kou in game while she was playing, nifuji...