Action/Fantasy: Hiding Strength/Power [mostly MANHWAS]

-reincarnation/isekai/adventure/school life
-wished to become a "HSC" (hidden strength character), now he "needs" to hide his strength or else his heart will explode
-op mc, more powerful than any hero, demon lord etc.

-hunters/dungeons/system/skills
-got memories and gained skills of his past life
-mc finds out that the former "heroes" of the past are being killed so mc tries to lay low and hides his power using "rental pay" -letting them forget once he lets them borrow his made weapons

-fantasy/school life/"soul"
-mc hides his real soul cuz he hates that his soul is killing people and hides as a worthless f-rank

-webtoon/school life/"abilities"
-only the first 50+ chapters tho
-*spoiler: mc pretends to have no ability and hides his power to not repeat his past school life where he beated up all the students there, it was fun seeing mc overpowering others esp the weak ones who try to gang up and bully him just pure physical/using no abilities