Alright, I was skeptical of this manga at first because sensei seemed like an infallible pillar, but this chapter changed that. I hope the mangaka can continue exploring this angle while maintaining his cool attitude. There's something to having a character or job that has to pretend to have answers, but having to say "I don't know what I'm doing" to themselves
And to completely ruin the mood, with an ass like that, it'd be weirder if he didn't attract both men and women. The mangaka is a great ass artist. Check out her other works for more choice ass