Wasnt the president included at some point?
To my knowledge, no. I was admittedly skipping around throughout the LN's volumes, but as of Vol. 13, the only ones he tussles with during the night are the dungeon ladies.
For Prez (and other girls from his class), the most is either an accidental discharge from being caught in a girl stampede, or them checking out his third leg after knocking him out (it seemed to me like they defeated him specifically for that).
Anyways, the girls might not be in the action, but the harem girls sure love to share the info on how wonderful the stuff is and did provide them with at least one lesson.
He does have this consistent 'TFW no GF' complaint in there, BTW.