Toaru Majutsu no Index: New Testament - Volume 17, Chapter 2: Or Escape Provides a Counterattack - Social_Network_Slayer.

But things seem to be different from the history that he knows.In this strange land, ancient legends walk the earth. Here Witches, Manticores, Vampires, Werewolves, Sirens, Dragons and Krakens are all terrifyingly real.As if that weren’t enough, this is also the age of legendary rulers—Baldwin, Saladin, and Richard the Lionheart —each destined to shape history in a new wave of Crusades.Amidst bloodshed and glory, Lothar must use his only advantage—his Gacha System—to build his territory, summon legendary units, and carve out his legacy in a world where ambition reigns and power speaks.

Seven years ago, Shen Qianshu is impregnated with Ye Ling’s child in an accident.
Seven years later, the little boy becomes famous and is thought of as the nation’s son.

When he suddenly sees Ye Ling appear, he greets, “Hello, Daddy?”
Ye Ling watches as the little prince roars, “Where’s my princess?”
Just as Shen Qianshu is preparing to run with her son, she gets pushed down by Ye Ling.

“You can leave if you want, but leave me a princess first. Let’s have another baby!”

- Description from Novelupdates

Suddenly a high school student Subaru Natsuki has been summoned to another world on the way back from the convenience store. With the biggest crisis of his life being summoned to another world and no sign of the one who summoned him things become worse when he is attacked.

She is the legend of the Heavenly Soul Alliance, the king of mercenaries with a perverse personality, the world’s number one head reward, she closed her eyes unwillingly in a conspiracy, but opened her eyes in the mountain of corpses in another world, when he met her , he knew at a glance that she was the love disaster of his life, he was unwilling to resolve it, and held her in the palm of his hand, and accidentally spoiled her to the sky, shocking the three worlds.

“Your Majesty, it’s too bad. Your Majesty led tens of thousands of soldiers to level the Shuize Empire and smashed the dragon’s Nilin one by one!”

Without raising his head, a certain person said two words softly, “Follow her!”

“Your Majesty, it’s not good again. The empress is too handsome in a golden armored uniform, and she was thrown down by the goddess of Luoshui as a man!”

A certain person with a face full of black lines, gritted his teeth, flew out, grabbed the goddess and threw it back, half-fading the golden armor, hugged the lazy and handsome boy tightly in his arms, and said with a gloomy face, “See clearly before rushing, She’s a woman!”

The Goddess spoke weakly, “I don’t mind her gender, I love her for who she is!”

Someone was murderous, “I don’t mind, she is my woman!”

- Description from novelbuddy