Local Netizen Elf's Life In Another World - Special case: Valentine’s Day with elves.

Ade has lived in an incense burner for over a thousand years, her days spent sleeping. Longing for the outside world she hears about from her fairy friends, her wish is finally granted when a man brings her home, releasing her from the seal. Ade, tears streaming, vows to repay her savior to the fullest extent.Qin Yu, known as the cold and ruthless Third Master Qin of Kyoto, finds his life upended when strange occurrences plague his bedroom after he places an antique incense burner given to him as a New Year's gift there. Chaos ensues, with items displaced and unexplained puddles of water; he even senses something in his bed while half-asleep.One afternoon, Qin Yu comes home early to find a young girl cleaning up spilled milk. The girl, her black hair cascading, her skin porcelain, is startled by his return and tries to flee. Upon being caught and questioned by Qin Yu, she timidly speaks of repaying her debt.To Qin Yu's amusement, she lists her belongings: pearls, antiques, even her savings. None of these interest Qin Yu, who instead sweeps her into his arms and suggests a more personal way of repaying the debt. Terrified, the girl's beautiful fish tail is revealed.

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.

Like his father, Kael Voss was abandoned and forgotten, the last son of Hades. The cursed son of the Underworld. Before dying, Hades passed on his crown to Kael. story about a guy who is tring to protect he beloved.