Rebirth of the Heavenly Empress - Chapter 146

The world that nurtured the civilization which reached the pinnacle of magic was on the verge of destruction.
The last survivor transmigrated to the past, when the magic civilization started growing, as countless mages were still fumbling their ways through the thorny paths of magic knowledge.
He, who came from the end of the magic era, aim to reach the pinnacle of magic.

- Description from Novelupdates

Without noticing it, a man called Bill passed away, but then he realized that his life wouldn’t end that way and soon he was reborn as Billy in another world. Billy was already satisfied enough that he retained his memories, but the surprises didn’t end there. He was born with a weird power that granted him the chance to convert mana into experience points and transmit it to all sorts of things.

Things were looking pretty good until he noticed that he was born in an impoverished and rustic village that was facing their imminent extinction in the hands of creatures that he had never heard of before and other tribes that had all sorts of abilities. Before he could learn how even to crawl, Billy had to find a way to help his tribe. Otherwise, they will be annihilated before he can even become strong enough to stand.

Billy’s journey will be much different than he had imagined. Much farther away from Earth than he had originally thought, Billy will have to adapt to a new environment where his tribe is at the bottom of the food chain. Will he be able to grow up safely and try to change things for the better for his new family and friends?

She is the newly crowned Best Actress of the Entertainment Circle as well as the long-lost second young lady of the Ye Family in the Imperial City, a fact everyone knew. The eldest daughter of the Ye Family was the Chairman of the Fenghai Group; the third son of the Ye family, a big shot in Imperial City; but the found second young lady was merely a decoration in the Entertainment Circle.Her father did not love her, her mother did not cherish her. However, nobody knew, behind the guise of a mere decoration, she was in fact an exceptional agent that international powers found troubling!Unexpectedly, she made a mistake, was tricked, and accidentally bound herself with a system to complete tasks and absorb energy.Since then, she dominated in all parallel universes, rewriting the tragic lives of others. In whichever world she was in, she thrived effortlessly. What she did not anticipate, however, was crossing paths with a big shot from a mysterious power…When she finally recovers her strength to return to her peak form, she could let go of her identity as the second young lady of the Ye Family; she could reject her family's estate. But, if she didn't give a good reckoning to those who plotted against her, how would she do justice to her hard-earned title of Chief Agent?Once her identity is fully revealed, it would be her time to shine!***One a prodigious mystery youth, the other a world-renowned Chief Agent, this is a showdown between two formidable figures.***The alternate titles of this novel include “The Heroine Is Really Amazing” and “The Hero Is Really Handsome”.—【Refreshing】【Quick Transmigration】【1v1】

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.