Isekai with Strong Male Leads

After being rejected because of his eye color he sleeps for 200 years to be in the future where he hopes that he would be accepted. Sadly, not everything went as planned.

Unlike many isekai stories where the MC wonders with no goal in sight, this MC wants to be number one. I like the character's personality and looks overall.

unlike other isekai's this one is based on Chinese beliefs. The carp that turned into a dragon and is now taking revenge for those who wronged him in his previous life as well as maybe BL in the story is one of a kind

This time the MC isn't a person showing its power to the world and gaining allies + status, but someone teaching magic in a meaningful way. Its a fun read with lots of magic world building.