Tomodachi no Imouto ga Ore ni Dake Uzai - Volume 3, Chapter 8: Only the Teacher is White on the Morning at the Inn

In a fantasy world where martial artists can split mountains and creeks with a wave of their hand and break rivers with a kick, there exists a little restaurant like this.

The restaurant isn’t large, but it is a place where countless apex existences will rush into.

There, you can taste egg-fried rice made from phoenix eggs and dragon blood rice.

There, you can drink strong wine brewed from vermillion fruit and water from the fountain of life.

There, you can taste the barbecued meat of a ninth grade supreme beast sprinkled with black pepper.

What? You want to abduct the chef? That’s not going to happen, because there’s a divine beast of unfathomable level, the Hellhound, lying at the entrance.

Oh, that chef also has a robotic assistant that killed a ninth grade supreme being with a single hand and a group of crazy women whose stomachs were conquered.

- Description from Novelupdates

This novel is also known as Long Live the Mad Wife!

Daughter of the Feng Family, born a waste. Forced to marry a fool in an attempt to expel evil influences. When the first killer from the 21st century possessed this body, the sky and the earth surged. She was indifferent and cold-hearted but she let her guard down around him alone. She thought he was a pleasant sheep but didn’t expect him to be a gray wolf in disguise!

- Description from Novelupdates