MTL - Doctor Chen, Don’t Be a Coward! - Chapter 346 The mission is here!

After an unexpected death, a soul finds itself reincarnated into the body of Itsuka Shido, an ordinary teenager in a world filled with powerful spirits, magic, and dangers from other dimensions. With the help of a mysterious system integrated into his body, Shido gains the ability to travel across worlds, summon legendary anime characters, and unlock a wide array of random skills and abilities.Disclaimer: The cover isn't mine, credits to the original artist.

I, the mighty Telepath Starlord, got banished into the mortal world. The days in the mortal world are much better than those in heaven! Everything is here — money, authority and most importantly stunning beauties! I am from a rich family. Yes, I am indeed wealthy now. The kind of wealth where you would not want to displease me. Domineering CEOs, military big shots, business geniuses, you name it — I know them all! I know everything you are thinking about. You can’t defeat me anyway, how are you going to go against me? A century in the mortal world is only equivalent to a hundred days in heaven.
As an urban banished immortal, I will enjoy the heck out of my time in the human world and a huge commotion would arise in heaven!

- Description from Novelupdates

My younger brother died.And it happened inside the prestigious private school that I struggled so hard to get him into.As I was crying in despair in front of his grave,A strange man who claimed to be the student council president appeared and made an unbelievable offer.“Would you like to go back one year if you could?”He seemed like a swindler, but faced with sudden despair, I had no other choice.I grasped at this rotten lifeline and hastily made a deal with him.And surprisingly, I really did go back one year in time.Without wasting time, I immediately transferred to that problematic private school. To protect my younger brother who was still alive.But this school, the atmosphere is not right.Ghosts and spirits appear all over the school, and ‘ghost stories’ occur.Somehow, my brother seems to be connected to these strange phenomena.Will I, Melody Hastings, be able to safely solve the ghost story, protect my younger brother, and get out of this school?

A young man with an extraordinary mind is off on an exciting adventure when he mysteriously wakes up in the body of a feeble slave-guy in a different, rich in quirks world.

The main character, a selfish jerk, would use extreme means to achieve his goals. However, he never allows his base instincts to overrule his sense of decency. He always pays back both good and bad deeds.

Will his (terrible/excellent) mentality help him make a fresh start? Will he get through misfortunes and hardships of the new world?