Necropolis Immortal - Chapter 1788: Scam

Wang Xiao was compelled to descend from the mountain by his master, with his intrinsic energy cloistered, and a lovely woman erroneously believing him to be her betrothed. In a bid to safeguard his mistakenly assigned fiancée, he resolved to remain in the school teeming with enchanting beauties. With the same intent to defend his intended, he managed to transform the currents of power within the city.

An ordinary (?) grandfather, Choi Chuntaek. In an effort to protect his granddaughter, he started the virtual reality game 'Arkstar.'

Then... he accidentally obtained a legendary class?

Surgeon Guan Ryo Is reborn in Naruto’s world! Enjoy his trip as he uses his knowledge of the story to find his path in this troubled world and eventually stand at the top of Konoha!

- Description from Novelupdates

My grandfather is very eccentric, performing daily rituals of offering incense to himself, standing in front of his own spirit tablet and eating candles.Villagers are fearful of my grandfather.I am fearful of him too.Later, I discovered that what they were afraid of was not my grandfather, but me.Even grandfather is afraid of me....My name is Chen Shi.The Chen of honesty, the Shi of sincerity.