MC is so foolish. I know he can't help how he feels, but he has others willing to indulge in his tickling fetish. Yet here he his mentally preoccupied with his teacher, a woman he realistically shouldn't be with (not because I think it's "wrong," but because we've been shown just how many barriers there are to a potential romantic relationship between them).
I think the worst part is that despite all this, MC will still end up with sensei. Even when it doesn't make much sense or isn't deserved in the slightest.
Thanks for the translation.