In the World of Sword and Magic as Space Marine - Chapter 99 - 14th Legion Part One

Ping Mo has been transferred from the Special Forces to the Alliance University, and the whole university is in an uproar. The new instructor, Ping Mo, is said to be a top alpha, with a lean waist, long legs, a nice ass, and a great sense of humor.

The little sweet omegas get weak at the sight of him.

Pei Yutu disdains: What’s so good about this f*cking little white guy?

Later, Pei Yutu discovers Ping Mo’s little secret; He is an omega, a rare Therian omega!

Big Pei pressed the man into the toilet stall, his teeth gently crushed his glands, looked at the flushed drill sergeant, squeezed the tail behind him, and laughed, “Damn! You’re so good everywhere!”

- Description from Novelupdates

A back-to-basics(?) monster evolution novel.

On the day of her escape from prison, she had died unexpectedly and was reborn into the body of Madam Huo.