In The Supreme Fantasy World, Back In Time And Do Whatever You Want! - Chapter 43 - . Elena Memories Are Fuzzy!

He, since childhood, had followed the Foreigner to practice the Defying Heaven Art, entering the most secretive special forces and becoming a fearsome assassin that made others tremble at the mere mention of his name. After a single failure, he took early retirement, but he ended up as the personal bodyguard for a rich heiress, a school beauty. Accidentally provoking some mysterious Cultivators, he gradually unveiled a hidden world of Cultivation beyond the mortal realm...

An ineffable rebirth, taking advantage of a mystical magic cube that was produced from rebirthing to pass through various worlds(anime, novel, movie, games, etc), collecting whatever I want to obtain!

- Description from MTLNovel

In the Canglan Continent, there existed a rule: only those who managed to awaken a Martial Spirit were able to pursue the path of cultivation, and a Martial Spirit’s rank was determined when it was awakened. Born in Linshui City, Qin Nan was a peerless genius who possessed great talents and was highly anticipated to become a great cultivator in the future. However, things changed when he ended up awakening the lowest-grade Martial Spirit, resulting in him being considered trash.

Fortunately, when Qin Nan was struck by a ray of lightning at a young age, he coincidentally obtained the atavistic Divine Battle Spirit, which was capable of ranking up, breaking the ultimate rule of the Canglan Continent. Little did he know that his Martial Spirit possessed a great secret, which would continue to be unveiled as he learns more about the story of the Divine Battle Spirit.

What is the secret behind the Divine Battle Spirit? What is the curse of the Canglan Continent? Who exactly is the Divine God of Battle?

Join Qin Nan and his companions along their journey, battling against various opponents, outsmarting their enemies, and seeking the answers to unveil mysteries!

“Master, please bring me along on your journey battling against the Nine Heavens, will you?”

- Description from novelupdates

Uchiha Kai has been cautious since he came to this world. He vowed that he must be cautious and go to the end.

But one day he received a mission – to cover the wave wind team to blow up the Kamabashi Bridge, Uchiha Kai knew that he was going to be unlucky…

- Description from novelbuddy