I'm looking for good series where the main character pretends or looks like they're weak/dumb but is actually really strong or smart. Basically, mangas where the main character is underestimated severely.

Examples:

1. Gokusen- Teacher pretends to be weak, but is actually the ojou of a yakuza syndicate.
2. Shibatora - Policeman who looks like he's in middle school but is actually a 4th dan in kendo
3. Onepunch-man - "Hero" who looks like he's weak.
4. Rurouni Kenshin
5. Black Cat

Looking forward to the suggestions! Thanks!

Oresama Teacher maybe?

Try Gun x Clover
The God of High School
Tora Kiss - A School Odyssey
Denpa Kyoushi-maybe
Mahouka Koukou no Rettousei-underestimated
Wolf Guy - Ookami no Monshou

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Tournament Round 1
Round 2

Black Haze - MC is actually a famous magician. Pretends to be a sickly student at a magic school. (When I say pretend, it's more like bold-faced lying, lol.)

Warau Kanoko-sama & sequel Koi Dano Ai Dano- Applies more to sequel, but character gives off the impression of incredibly average and dull student, but she's actually a schemer. (In the sequel, it's common for people to think her friend does everything, but in actually, they were her plans.)

Seconding...

Mahouka Koukou no Rettousei I prefer the light novel though, this one Mahouka Koukou no Rettousei (Novel), The MC here is hiding his real power with a proper reason and you'll see a LOT of discrimination towards him here.

Gun x Clover He pretends to look weak and useless when he's actually one of the strongest.

Black Haze Hiding his identity as a newbie magician. You'll get some discrimination too like in Mahouka

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Maybe Superior and the sequel Superior Cross

Thanks for the suggestions! Will start making my way through them.

Happy New Year!

Makai no Ossan
That old man certainly dont look strong.

I third Mahouka Koukou no Rettousei.
And Black haze is even better though not AS bad when it comes to discrimination against the MAIN character...

Aww, you've read Rurouni Kenshin alread ;(. Okay, then, a common one that many people recommend for RK fans is Samurai Deeper Kyo. I've tried it and it's pretty good, but it's up to your tastes.

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"'The lives I've taken will be paid for with my own life.' That's one way to look at it...but it doesn't mean they come back once you die. Lives can also be paid for by the sword; by redeeming yet other lives. That is why 'Hitokiri Battousai' is still alive in the Meiji Era."

don't click this link...

Try the Deceptively Weak-Looking Protagonist tag

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