Having children earns benefit, start competing for dominance in the world by marrying a wife - Chapter 1276 - 966: The True Power of the Fire God Cannon

Volume 1 (Set between volumes 13 and 14)

A series of short stories set before the events of volume fourteen including how Team GROUP was formed.

Volume 2 (Set between volumes 16 and 17)

A series of short stories including two separate meetings between Touma’s and Mikoto’s parents, two tales involving two of the Level 5s of Academy City, and other funny stories involving some of the characters.

He is high above, the mysterious and terrible King of the Wild. With one glance, he can see people’s romances. He hates women to the extreme, but at his first glance of her, he dotes on her and spoils her.
She is a humble transmigrator, a miracle doctor who doesn’t care for the many handsome men around her. She only wants to become strong, to be worthy of that god-like man. But when she’s finally sure of her feelings, she finds out she’s already been married for years…
……
When wronged：
She uses strength to hit the big handsome iceberg-like man in front of her eyes. “People say that I’m not good enough for you, but it is you who is an old cow eating tender grass!”
A man seizes the main point and laughs like an evildoer. “This husband has to eat the grass to confirm if it is tender or not!” He puts out the red candle……
……
The world says：
The barbarian king has no heart and has no passion.
A pregnant woman very miserably thinks,” If he has no passion, then who is responsible for this big belly?”

- Description from Novelupdates

After being unemployed for a long time, Feisha Shi finally found a new job – the front desk manager at the oldest hotel in the universe.

This hotel has a fallen angel, vampire, werewolf, faerie, dwarf, titan, invisible person… just no humans.

This hotel serves customers who are fallen angels, vampires, werewolves, faeries, dwarves, titans, invisible people… still no humans.

This hotel’s name?

Noah’s Ark.

- Description from Novelupdates

Van and his friend Magus had reincarnated in another world with magic. Tasked to kill the demon lord, they set forth.Van was granted very rough skills that made life for him in that world a living hell, yet he muscled through.Magus however, was bestowed with unfair skills. Due to some of said skills, he gained a harem, which in time, included the girlfriend Van made in the world.After beating the Demon Lord, and after finding out his girlfriend had been stolen from him, he got very upset and so he went to propose to... The Demon Lord...!?