If It's for My Daughter, I'd Even Defeat a Demon Lord (2019)

Three months have passed since the Demon Lord was struck down, and the Demon Realm is holding a tournament to select his replacement. The leading contestant is Helck, a human hero who claims to hate his own kind. Some aren't happy with the idea of a human becoming the next Demon Lord—especially Vermilio the Red. She wants nothing more than to protect demonkind and prove Helck to be their enemy, even if she has to rig the competition to do it!

On the night of his 30th birthday, one man’s dreams of wielding magic come true after he unexpectedly passes away. He wakes as Sion, a young child in another world. He and his elder sister, Marie, are the children of a lower-class noble family who govern their region. After receiving conflicting messages from their father, Sion and Marie set out on an adventure to uncover the magic.

A host of demigods have inherited the world after the Demon King has died, and a battle to determine the mightiest ensues.

Destructive monsters from the Mato dimension threaten the earth, while women gifted with powers from Peaches try to stop them. But to save the world, Yuuki must be willing to become Chief Kyoka's servant both on the battlefield and at home.

Witches were once respected for the wisdom and magic they gifted to humans. But with the rise of the Gear Expansion era, the new science community deemed them as enemies who hindered the progress of society. Thus began the slaughter of all witches, including one who had mentored a human boy named Adonis. After witnessing her death, Adonis vows to bring bloodshed and terror to the human race.

As the war between the Imperial Army and Hellhorde rages on, the Princess, despite being armed with her mythical sword Excalibur, is captured and imprisoned. What kind of torture does she face at the hands of the chief demon interrogator? Fluffy fresh-baked toast! Hot, steaming ramen! Oh, the humanity! Can the Princess withstand these tormenting treats and keep her kingdom’s secrets safe?

Kamishiro Takeru is a completely ordinary salaryman who reincarnates in another world—a world of swords and magic called Madeus—and starts his new isekai life with lots of new skills! Takeru must make the most of his enhanced physical strength, unbelievable magic power, and the "Search" ability that allows him to find items of worth as his great isekai journey begins!

After dying in a fight against the forces of evil, a knight found himself reincarnated as one of the most powerful monsters in the world: a behemoth! Problem is, he has to grow up before he can really strut his stuff, and a baby behemoth looks an awful lot like…a housecat?! And when an elf adventurer decides to take him in, she may need his help as much as he needs hers!

After a god accidentally slays him, Takumi’s reborn with new skills in a monster-filled forest where he stumbles upon twins. They’re sweet, adorable, and super strong! Won over instantly, he names them Alan and Elena, becomes their guardian, and joins an adventurers’ guild to provide for his new family. And so starts his chill life of adventure, watching over Alan and Elena’s growth!

The boy's name was Hitori. A stork brought the angel into the lives of a middle-aged couple who were not blessed with children. His parents were kind, his house spacious, and his meals hot. But to protect the happiness he had received, Hitori continued to hide an important secret from his parents.