The Apocalyptic Queen Back From Hell - Chapter 23: Like an Old Lady!

Lyle Walt is a young noble boy and heir looking forward to the day he can inherit his family’s territory. Except around when he was 10 year old, his parents started neglecting him more and more in favour of his little sister, Celes.
On his fifteenth birthday, he is challenged to a duel by his sister to see who will inherit the household and horribly loses, being cast out of his family. Afterwards, he gets treated by the family groundskeepers and receives the family heirloom Gem from him that Lyle’s grandfather had entrusted to him. From there, he begins an aimless journey with his childhood friend and former fiancée, Novem, and the Gem-turned-Jewel that houses the memories, personalities, and Skills of seven of his ancestors.

Others treated disease to save person, he treated disease to steal heart.

The Frost Goddess was deeply captivated by him. The gentle and kind beautiful teacher was completely enchanted by him. Even the cold and beautiful female assassin melted quietly because of him.

Competing in medical skills? He was the one who treated the Godly Doctor. Competing with backgrounds? Leaders rushed to him. What? You actually wanted to compete with him in a match for match? Looking at the gentle girl beside him, Tang Yu had a headache as he said, “Beautiful girl, how did you fall in love with me?”

- Description from Novelupdates

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.

Two years ago, Iris Crawford was mocked by the person she loved as a hopelessly fat woman and was forced to sign a divorce agreement. She endured it!During a kidnapping incident, he chose to save his mistress instead, prompting Iris Crawford to swear that she would make this pair of cheating lovers pay the price!Two years later, she returned slimmed down and transformed, with her scumbag ex-husband continually begging for another chance, saying he had improved...A mysterious young master took to surrounding Iris Crawford, dishing out punishment to the scumbag and publicly humiliating him in the process: Iris Crawford, you’re not suited for something better; you’re suited for the best like me.