I was Caught up in a Hero Summoning, but that World is at Peace (WN) - Chapter 2036: At the New Stores ⑬

Ambrose Lu possesses the Eternal Longevity Body, granting him immortality and eternal life.Throughout countless years, he has traveled through myriad worlds, gained infinite experiences, and held various roles.He has been a leisurely Immortal Emperor, a tavern keeper selling wine, the mysterious leader of a sect known as the Carefree Sect, and a divine healer saving lives in his medical clinic.Additionally, he wields blade as the Green-Clad Sword Immortal, using his sword aura to sweep across the world!

“A cheat system? Do you take me for a fool? Nowadays, where can you find such a good thing falling into your lap? Scram from my head. Is this is new kind of fraud? Or is this a murderer training system of aliens that contains the ability of hypnotism?”

“No, I am the chaos that whispers from nothingness, the nightmare of all living beings in the Southern Ten Stars, the successor of the unparalleled God and… your elder sister.”

“…I only have a younger sister, I don’t have an elder sister!”

“No, you have one. I am an illegitimate daughter. It’s just that your dad didn’t inform you.”

- 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.

Li Yubing and Tang Xue were deskmates throughout the whole six years of primary school. After being plagued by Tang Xue for the entirety of this period, Li Yubing saw his chance and broke free with his secondary school selection. With no contact for yet another six years, who knew that Tang Xue and Li Yubing would one day meet again in university…

- Description from Novelupdates