Reincarnated with an Analysis system. - Chapter 7 The God Bird

A data loving young man from Earth has an accident which transports him to a dark land filled with terrifying creatures and magical powers. Fortunately for him, he has a Biological Assistance Chip to ease his path. However, things in this bizarre and strange world are not always as they seem, and, though it is a tremendous asset, the chip doesn’t always work as expected. With all of the crazy creatures and magical mayhem around him, one can only wonder what the future holds for this young man…

- Description from novelupdates

He is a young man without a spirit root. It is believed that this denies him the chance at cultivation. However, a mysterious lady imparts a Supreme Demon Classic to him and from then on, he starts his path of cultivation.
He undergoes a total transformation to emerge as the most fearsome and powerful fiendish demon in his era, that even immortals and fiends are fearful of him, and saints are at his beck and call.
Mastering the Supreme Demon Classic is the turning point in his life. He is able to unleash his immense and divine power from within, illuminating the entire universe!

When you're reborn as Jorah Mormont you ain't got much. A Dad looking to bale and go spend his days hanging out with the guys on the Wall, a wild Aunt raising your wild cousins you can't stand, an arranged marriage to a girl you never met with a dowry almost low enough to be an insult, and a populace of smallfolk so inebriated and incompetent its no wonder nothing's changed around here in 8,000 years. Hopefully the gold finger granted by Levid's Magically Wheel of Reincarnation can help.A really nice pair of testicles.With that, the right attitude, and a shovel I have everything I need to dig a nice grave to lay in.Or Bag End. Let's see which happens first.

Reborn in a parallel world, this place is imbued with eeriness everywhere... Do not enter the bathroom after midnight. At two in the morning, the sound of knocking resonates on time. A woman, haggard and emaciated, always stands with her back to oneself. Encountered a strange event? Lucky for me, I can Rewind! This is the story of a Reincarnator, carefully navigating a reality invaded by the bizarre, combating the strange with bizarre poses.