Responses
Try looking at this forum (it sounds like what you are looking for):
https://www.mangaupdates.com/showtopic.php?tid=42498
beta
Recommend me an action manga where the protagonist is extremely strong but tries to hide his strength when he is around people. And those around him think that he is weak? (Something smiler to Black Haze)
*Hope their is a manga out their that fits my category*