Dawn of a New Rome - Chapter 4: A Room of Dimming Suns

Cultivators all have a soul beast, one that awakens at 13 years old.
However, Ye Chenfeng lacks one and is subsequently banished.
Ye Chenfeng obtains the favor of the heavens after years of humiliation.
With his gifts, he will walk his path to the strongest.

- Description from Novelupdates

This book narrates the joyful cultivation tale of an ordinary commonplace university student and a cute and coquettish little fox.

On a continent where every soul is born with a Seal that defines their destiny, there is no place for the weak.“Mo Bai” son of the Demonic Seal Sect, had his childhood stained in blood—forced by his own father to kill at the age of six.With only average talent but an unbreakable will, he enters the Demonic Academy, where his journey begins—to prove that sheer will can shatter all limits… and even rewrite the very laws of the Seal.Tags:1. Unique Cultivation System2. Dark Fantasy3. Cunning Protagonist4. Evil MC5. Anti-Hero6. Power Absorption7. Martial Arts8. Sect Politics9. Intelligent MC10. Villainous MC11. World Building12. Psychological13. Twisted Morality14. Mystery15. No Romance16. Gore17. Average Talent18. Betrayal19. Survival20. Slow Burn Power Progression21. Cold-Hearted MC22. Scheming23. Dark World24. Tragic Past25. Growth Through Suffering26. No System27. Morally Gray MC28. Descent Into Darkness29. Heaven-Defying30. Clans and Bloodlines

There was a Senior Brother and a Junior Sister. One of them was transmigrated to this world and had cheats while the other was the reincarnation of a Great Emperor.