Strong male lead

ML disappeared into the darkness, and didn't emerge until ten years later being the only survivor and a total OP. He now runs a school, and is just being a badass from time to time. overall a good read.

Reborn in a magical world, he still tries to uphold his dying mothers words of him living safe and becoming a civil servant. Which will be harder since he was born into a strong tribe that took down the demon king serveral years ago.

Could be good, at least there is a good backbone in the mc

Getting mocked in the group he was in, he quits and trains in dungeons to level up his skills.

traveling back in time by mysterious means, the third young lord will take revenge against his household and save his sister from her horrible future

Not really a fan regarding the female drugging and then rapeing the mc in the beginning of their encounter, but as long as you don't think too much about it, it is a fairly good story.

Taken from the orphanage at the age of 5 the mc was trained to be the best unknown assassin, and at the age of 15 he killed the demon king in place of the hero that continuously lost to the demons. Now with no job he whishes to experience the normal life of many people, and will therefore attend school, where he meet his new friends and their circumstances will force him to make use of his unique skills.