Heavens' Laughter - Chapter 14: Cultivating

Leon is an average high school student who likes to watch anime and read novels.
He's about to cross the street, only to be greeted by a truck and died.
But, he got reincarnated as Uchiha yet dead again because Itachi killed him.
Leon got reincarnated again as the grandson of the recovery girl.
He got kidnaped and tortured by All For One.
After his third death, he got reincarnated as a son of Bibi Dong.
In this fourth life, he wants to change his fate to become the strongest.

Note: Please read the tag before reading.
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Revenge is the only thing she wants after knowing the truth.

Orphaned at a young age , Layla Llewellyn feels like the luckiest girl in the world after she moves in with her uncle Bill , a gardener who lives on the scenic Arvis estate in the Berg Empire . To Layla Arvis seems like paradise ; she loves to explore the vast forest , always bringing her notebook to record the wildlife she encounters . She especially loves the birds , watching them with awe as they hatch and grow from fluffy chicks into beautiful birds . Duke Herhardt , the young , handsome lord of Arvis , is also interested in birds--- and Layla . But the difference is , he's interested in birds because he likes to hunt them.... and he's interested in Layla because he likes to make her cry . If a lovely bird is trapped in a golden cage , which will she choose : a life of luxury , or freedom ?

What happens when a scientist from a futuristic world reincarnates in a World of Magic and Knights? An awesome MC is what happens! A scientist’s goal is to explore the secrets of the universe, and this is exactly what Leylin sets out to do when he is reincarnated. Dark, cold and calculating, he makes use of all his resources as he sets off on his adventures to meet his goal. Face? Who needs that… Hmmm… that guy seems too powerful for me to take on now… I better keep a low profile for now. You want me to help you? Sure… but what benefit can I get out of it? Nothing? Bye. Hmmm… that guy looks like he might cause me problems in the future. Should I let him off for now and let him grow into someone that can threaten me….. Nahhh. *kill*-

Alternative: Leylin is transported from an advanced technological era into a medieval world— except there’s magic. Equipped with “only” his quick wits and an A.I. chip fused to his soul, he sets out to become the most powerful magus the world has ever known. In a land divided into the Light and Dark Magi, the weak can either be cattle or disposable slaves. Only the strong can determine their lives, and only they have the luxury for virtue. Yet strength is only a tool for Leylin, like any other. His goal, in the end, is his own.