Nikusuke no Momoiro Shuugaku Ryokou

Nikusuke Toguro, a gym teacher, is hated by the female students because of his perverted ways, therefore it's not a surprise if the girls are uneasy at the news that the protagonist is the organizer/supervisor of the next school excursion to Kyoto.
And they're totally right, because Nikusuke has more in mind than cultural sightseeing...