Post your top 5,10 (or whatever number you want) seinen [mature] manga/ manhwa.

I will start then:

1. Eden
2. Homunculus
3. Akumetsu
4. Ichi the Killer
5. Jiraishin (Ice Blade)
6. Shin Angyo Onshi
7. Battle Royale
8. Sidooh
9. Dorohedoro

PS: Also post less known manga/manhwa (scanlated) that you think is good, but for some reason unpopular. I mean flood topic with [monster, pluto, 20th century boys] and etc is pointless ^^ Everyone knows they're good ^^

I like

Monster
Team Medical Dragon
Battle Royale
Jirashin

Too Weird to Live. Too Rare to Die. - HST.

Hmm besides things already mentioned I liked (off the top of my head)

Endo Short Stories (all of them, but especially "For Those of Us Who Don't Believe in God" )

and also

Piano no Mori
Real
Fire Candy
Alive! (well… actually I like most things Takahashi did so far)
Hotman
Ciguatera

Piano no Mori
Ciguatera
Believers
Arigatou
Himizu
Homunculus
Koroshiya Ichi
Nijigahara Holograph
Say hello to Black Jack
Eden

top 10, possible to change at any given time

don't really have much of a top 10, but my favourite is xxxHOLiC (I'm not sure if it actually is one, but that's what it says under the Genre category).

If Death note is a seinen (it seems like one...), I like that one too 🙂

4. Sanctuary
5. Yokohama Kadaishi Kikou
6. Emma
7. Jiraishin
8. Genshiken
9. Eden

Numbers 1-3 and 10 aren't mentioned since they're very popular. Blame and GUNNM don't appear on this list because they're not listed as Seinen in the database...

Sorry to burst your bubble Da-manta-ray but I thought I shoudl just point out that Death Note is shounen. Well anyways here's my list.

1. Berserk
2. Hellsing
3. MPDetective
4. Gantz
5. Battle Royale
6. Lupin the third
7. Genshiken
8. Great Teacher Onizuka (I think it's seinen? Probably.)
9. Ichi the Killer
10. Say Hello to Black Jack
    And eh...other stuff too.

How many posts did it take for someone to mention Berserk!?!?!
I always though of it as one of the best... unless it's considered like the naruto of the seinen?
Well it's true we weren't supposed to list the most successful one but not having it appear even once seemed weird...
Anyway, most of those that marked me are already mentioned like Ichi, Humunculus, Alive! Akumetsu etc...
I also think that Kiseiju deserve a spot in here.
Another one that wasn't mentioned, is Telepathic Wanderers, but I guess that since it isn't listed as a seinen... But it's still very good and I'm sure the seinen crowd would probably like it. (to bad it was so short)

Berserk is number 1 on my list, and no way is it as over-rated as Naruto. I just didn't mention it since OP asked not to list really popular manga.

Quote from frustratedguy109

Berserk is number 1 on my list, and no way is it as over-rated as Naruto. I just didn't mention it since OP asked not to list really popular manga. Not really ^^ I asked to post stuff you like and also include other good (less known) titles that somehow got lost amongs Berserks and Monsters ^^

It's just there are some titles that for some reason people do not mention. [well, every one has different likes and dislikes after all]

So post your TOP + other good mangas =)
Everything is good as long as it not a whole page of 15 manga titles arranged in different combinations.

Blue Heaven
Koroshiya Ichi
Homunculus
Freesia
Kilico

Every dead body that is not exterminated becomes one of them. It gets up and kills! The people it kills get up and kill!

Kiseijuu
Yokohama Kaidashi Kikou
Hotman
Genshiken
Hourou Musuko
Crying Freeman
Hellsing
Honeymoon Salad
Koi Kaze
Sweet Blue Flowers
Shion no Ou
Emma
Lament of the Lamb
Skyhigh
Yougen no Chi
Homunculus
Peshi

Those are the ones I can think of right now... and that's approximately my order of preference...

Quote from frustratedguy109

Numbers 1-3 and 10 aren't mentioned since they're very popular. Blame and GUNNM don't appear on this list because they're not listed as Seinen in the database...

Just because they aren't listed, doesn't necessarily mean they're not Seinen. Its pretty safe to consider both of them as Seinen from pretty much any perspective you look at. They were both published in Seinen anothologies (Business/Ultra Jump and Afternoon), and they both can be quite graphic and mature at times. So whether you view Seinen as a demographic or as a genre, it fits either way. Perhaps those series information should be changed.

I just added Seinen to their genre classifications. Both are good, I overlooked putting them on my list.

I love seinen... but it can be a really depressing genre sometimes.

First post and WHAT THE HELL!? No one mentions Bokurano nor 20th Century boys?

My Humble Top 5:

Monster
Bokurano
20th Century Boys
Dragon Head
NHK