Yuan's Ascension - Chapter 28: Welcome Back, Chieftain

The world was once at war with 10 alternate worlds. This was known as the Concept War and our world won 60 years ago. All of this was concealed so no normal people are aware of this fact in the current time.

After the death of his grandfather, the high-school student Sayama Mikoto is suddenly summoned by the giant corporation IAI. He learns this world is headed for destruction due to the acceleration of the Minus Concepts. To prevent this, negotiations must be undertaken with the survivors of the other parallel worlds so their 10 concepts can be released.

And so Sayama is caught up in the final battle to clean up after the Concept War which left behind so much enmity.

WARNING! MATURE AUDIENCES ONLY!!***Casey is a top event planner, planning events for the most elites in the city. She's now tasked with the career-defining job of planning her best friend, Kira's, wedding. However, her life turned upside down when she found out she was falling in love with Jace, her Kira's fiance!Jace is the CEO of Chillz streaming platform, one of the biggest in the country. He's also one of the most dashing bachelors, always on the news and always being hounded by paparazzi. In a desperate move too expand his company, he opted to get married to KIra. But it all changed when he met her best friend, and suddenly, even the future of his company couldn't stop him from wanting to be with her.As passion burns hot and the embers of love is fanned, Jace and Casey try to fight their growing attraction to each other to respect Kira. But with such intense feelings, there is only so much they can do. Will they be able to stay away from each other regardless of the mounting temptations? Or will they throw caution to the winds, finding happiness in each other's arms even while everything they've built and worked hard for goes up in flames?

Lingyun, a fierce and savage cultivation genius takes over a dead teenager’s body. Coincidentally, they are both named Lingyun. Set in a alternate version of the 21st century, teenager Lingyun has been killed by someone with a grudge.

- Description from Novelupdates

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.