[???]'s activites

...

This is just a list of manhwa/manga which has main character/s who gained a second life in the modern world setup.

Main Characters: Reincarnated/Second Life
Settings: Modern Society

The list is in no particular order.
Feel free to suggest anything in the comment section.

"When I transferred to a new school, I found a seal among my classmates...? "A transfer student, Yam...