My Dungeon Life: Rise of the Slave Harem - Chapter 7

Waking up as the most hated noble family in a fantasy world is bad. Inheriting a 50,000 gold debt with a death sentence attached is worse.​But the Sanusi family isn't scared. They are from Earth, and they brought the Industrial Revolution with them.​Now, the magical realm faces a new kind of warfare.Knights vs. Tanks.Mages vs. Railguns.“You have a Dragon? That’s cute. We have Anti-Air Cannons.”​It’s time to pay debts and conquer kingdoms.

Okay, so I know I applied to become a caretaker, but I didn't sign up for having to experience all these crazy things! I'm just a simple guy!

Zhang Lin, the king of Holy Light duel, was smeared by the team’s design and forced to withdraw from the online game professional league.
In order to return to the top, pick up the previous Summoner trumpet to fight against the Holy Light again, and perform the return of the king.
Summoner PK is the weakest? NO, everything is possible in Zhang Lin’s hands!
Play around with the guild, get the best equipment, and make beautiful MM…
Single P, Triple P, Group P, let the horses come over!
The bloody battle ignited the passion. Zhang Lin and his friends stepped over the mountains of corpses, and let tears and laughter witness Zhang Lin’s legendary online game life.

- Description from novelbuddy

The Student Council President’s Secret Laid Bare (生徒会長のセキ裸ラな秘密) is fairly standard 2D Dream Bunko fare but with an exhibitionism theme.

Basically, it’s about a guy who discovers the student council president is an exhibitionist and gets roped into helping her with that fetish.