Toaru Majutsu no Index - Volume 16, Chapter 4: Who is Protected by Whom? Leader_is_All_Members.

What do you mean by there are cultivators in this world?And I have a heaven defying physique?Zhao Tian is living a normal life with his family including his mom and sister! But what will happen when he comes to know that this modern world he is living in is not normal and there are people who can use supernatural powers who are called 'cultivators?'He came to know that he has a physique that could even defy the mortal limitations of the heavens.From there his life changed with many women entering his life.And there seem to be a lot of secrets that lie within him that he doesn't even know himself. What will he do after knowing about his secret and origins?!

Ling Fei, the son of a fisherman in Sanxian Island, was accidentally involved in a mysterious continent–Arad, after learning that his celestial destiny was shallow and that he had no way to ascend.

Sword, there are unique adventurers here. Ling Fei, who has just arrived, has a mysterious mission and an ancient blood. The silent Grand Forest is roaring, the ancient ruins of the king are lamenting, and it is unknown what the legendary headless horseman is chasing.

On the ground, Ling Fei gets acquainted with his partners, takes risks, and becomes a legend!

- Description from novelbuddy

Shen Qingxian is the Honored Lord Lianhua, only lacking ascending to the heavens.

Gu Jianshen is the Demonic Emperor Jiuyuan, only lacking destroying the three worlds.

Everyone believed that a meeting between Shen Qingxian and Gu Jianshen must result in a war spanning the three worlds, the two of them dueling to the death.

Until Shen Qingxian went through a hundred years of closed-door cultivation, and spied upon heaven’s mysteries.

Words of heaven’s mysteries: For ten thousand years, no one in the cultivation world has ascended to the heavens. This is because the Heavenly Staircase has long since collapsed. The only way to set this right is to follow the directions of this jade scroll.

Jade Scroll Writing: First, meet with Gu Jianshen. Second, drink and get drunk together with Gu Jianshen……. Thirteenth, pass a ‘spring night’ together with Gu Jianshen…….

Shen Qingxian: “……”

- Description from Novelupdates

Born into a wealthy family, Gu Shenwei was spoiled and carefree. However, at the age of 14, his entire family were brutally murdered, and he was caught by some bandits who sold him into slavery. As a slave boy, he entered Golden Roc Fort by chance and found the man who had slaughtered his family. He endured insults and worked hard to improve his kung fu while working as a slave boy. He learned from and plotted against his enemy under the enemy’s nose. He became increasingly ambitious as he became more and more powerful. He would only be satisfied if he completely destroyed his enemy—by fair means or foul. Gradually his bitter experience turned him into a totally different person.