I found it ! ヾ(☆▽☆)
It's this one https://www.mangago.me/read-manga/the_promise/
Thanks a lot to those who helped and I clearly recommend it to you it's just amazing
I'm searching for a manhwa I read some time ago. It was either a yaoi or a shounen ai. It was some kind of fantasy or supernatural story. The Mc was a man with a superpower but was hiding a part of it and pretended do be an E class or any other weak class even though he clearly was powerful. He encountered Ml who was one of the most powerful during......