Academy’s Undercover Professor
. . . Dude reincarnated into world full of magic and using his knowledge from earth gets really powerful. Keeps using various famous earth authors and characters names when in disguise so just for that 10/10 . . . . . . .
Dr. Player
. . . Illegitimately children are looked down upon like it's their fault for being born, and the higher position of their parents - the worse. Mc father is king, so he had horrible childhood after his mother died in slums and he was brought into castle. Basically the only way for bastard child get honour and respect is to become great healer, but for that you need talent, and mc didn't had enough of it - which why he was ridiculed even more. However one day he was struck with earth's modern medicine knowledge and instead of traditional heal magic (which basically boosts vitality) he started treating people with medical knowledge . . .. . . . . .
The Knight King Who Returned with a God
. . . . 20 y/o orphan died and reincarnated as another world's duke's son, where he trained hard to become a holy knight. Over his time he gained power and glory, however his world was doomed. Demons of all sorts kept spawning and destroying everything, killing all life there was except for him. He was the sole survivor, who for 300 years managed to kill every single demon that had appeared, but there was nothing left of his world. On his last kill spree a gate appeared and some earthlings emerged from it - appearantly some time after his first life death earth was "bombarded" with gates and monsters coming out of them, and his gate (his world) so far was the worst out of all, but king cleared it all on his own. Now he lives on earth once again, as a king tho. . . . . . .
F-Class Destiny Hunter
. . . You're born with one unchangeable fate and it decides how fast you get better/stronger (divine best, insecticide worst). Collecting lots of karma brings insanity (?) . . . . .
Ashtarte
. . . .prophecy has told that one of the king's daughters is light and another - darkness. Light will bring salvation while darkness destruction. They were divided to their roles by their hair colour, so MC because of her black hair became subject of hate. . . . . .
The Duke’s Redemption
. . . Bromance (but it would be so easy to turn this into BL omg), so novel reader one day finds himself as newly hired aide of duke, who's gonna become master of holy sword (everyone believes that), but MC knows that that not gonna happen, duke gonna turn to dark path, cause chaos and get killed. So MC tried to devise a plan how to avoid such events by teaching duke that life is not only just about becoming that holy sword's master. . . . . . . .
Boundless Necromancer
. . . Dungeon break happened and countless monsters poured on earth only for some people to awaken hidden powers and become hunters. MC had awakened too, however his talent was so low that no matter how hard he tried he still was a trash. When he was about to lose hope he got ducked into tower - this new mechanic appeared out of nowhere, choose people at random and kept giving them trials upon trials, giving those tho pass rewards and those who don't - death. Now MC gets more powerful with every foe he kills! . . . . . .
If You Remove the Kind Protagonist’s Mask