MTL - My Beautiful Teacher - Chapter 5 1 mouth is not ringing

A boy from 21st century Earth, met an accident and later was reborn in Naruto’s Ninja World.
He is born in Uchiha Family and becomes the useless brother of Itachi Uchiha and Sasuke Uchiha…. Let’s see how he changed the Naruto world.

- Description from Novelupdates

How strong does one have to be in a world that doesn't forgive weakness?Reborn as a tiger in a world where a simple wave of the hands of someone powerful can be a calamity capable of destroying entire worlds.Kai is determined not to bow his head, even if it means facing these earthly calamities alone.If they are capable of destroying the earth, he will be capable of shattering the heavens!He must become the Heaven Breaker!

A high-ranking officer in the Marines and a master of both Western and Chinese medicine, Feng Yu Heng is transmigrated with a duang sound to the Da Shun Dynasty.

Yao Zhi died in regret due to exhaustion and transmigrated into an unrecorded kingdom in history.Waking up to find herself in a body weighing more than 200 jin, she was in despair. As she was ready to curse Heaven, she found herself bound with a system.With an auction system on hand, she embarked on the journey of pampering her rough husband and building her business.