Seinen is Art.
Manga
◦ Most entries are Seinen but there are some which are not. I included them because they're either definitely suited for an older/adult audience or are just the epitome of good writing and too good to miss out on!
◦ Almost all mangas are my personal recommendations but some of them aren't preferrebly my favorites. Even so they're worth reading at least once, hence this list.
Part 2 : https://myanimelist.net/stacks/15200
◦ Almost all mangas are my personal recommendations but some of them aren't preferrebly my favorites. Even so they're worth reading at least once, hence this list.
Part 2 : https://myanimelist.net/stacks/15200

Manga, 22 vol, 1999
Me:-
Author:9
Mystery, psychological, also focuses on the essence of childhood.

Manga, 17 vol, 2012
Me:-
Author:-
How does the existence of demi-humans change the way of the world?

Manga, 2 vol, 2014
Me:-
Author:-
Reliving the most painful moment in life, again and again.

Manga, 15 vol, 2015
Me:-
Author:-
A very funny manga about three school girls going through their daily problems.

Manga, ? vol, 1989
Me:-
Author:10
A little edgy but very gory and uncomfortable themes, amazing characters, extremely graphic and explicit, not for the faint hearted (warning).
RIP Kentarou Miura.
RIP Kentarou Miura.

Manga, ? vol, 2002
Me:-
Author:-
Naive ex-office worker gets thrown into the world of guns and goons.

Manga, ? vol, 2012
Me:-
Author:-
Detectives and mafia with super powers.
p.s. particularly fascinating for novel lovers since the characters are named after famous authors while their ability is named after one of their most famous books.
p.s. particularly fascinating for novel lovers since the characters are named after famous authors while their ability is named after one of their most famous books.

Manga, 17 vol, 2017
Me:-
Author:8
Follows the twisted relationship between a mother and her son.

Manga, 31 vol, 2014
Me:-
Author:-
A soldier and a hunter duo's journey during the 20th century to find the hidden treasure that one of them has the biological right to.

Manga, 5 vol, 2011
Me:-
Author:8
Two brothers trying to survive amidst corruption and war.

Manga, 15 vol, 2003
Me:-
Author:5
Follows a man's journey of knowing who and what he really is.
Also, LGBTQ+ friendly.
Also, LGBTQ+ friendly.

Manga, 13 vol, 2012
Me:-
Author:10
The characters are crystals who live on earth supposedly devoid of humans.

Manga, 7 vol, 2013
Me:-
Author:7
Released in Shounen Jump.
This is a beautiful story about bullying and self love. The anime does a halfass job as it focuses only on the POV of the male lead. The manga however paints a beautiful picture about two sides of the same coin.
This is a beautiful story about bullying and self love. The anime does a halfass job as it focuses only on the POV of the male lead. The manga however paints a beautiful picture about two sides of the same coin.

Manga, 3 vol, 2007
Me:-
Author:8
Life of a country girl after her marriage during an era of approaching war.

Manga, 18 vol, 1994
Me:-
Author:10
A Surgeon is framed for something he didn't do... or did he?

Manga, 10 vol, 1999
Me:-
Author:9
Out-worldly creatures and our protagonist who deals with them.

Manga, 1 vol, 2003
Me:-
Author:7
Story is very confusing but you get a grasp of the plot after a second read - which is recommended as it's a short manga to begin with. Very uncomfortable themes and questionable characters.

Manga, ? vol, 2012
Me:-
Author:9
ONE's story is peak parody, mostly making fun of the superhero troupes in anime and manga.

Manga, 13 vol, 2007
Me:-
Author:9
Only read it if you can endure a lot of psychological trauma that'll be inflicted upon you throughout and after your read.

Manga, 8 vol, 2003
Me:-
Author:7
Robots and humans co-exist and there are problems. Anime adaptation is superior imo because there are some minor but very good changes.

Manga, ? vol, 1999
Me:-
Author:10
Follows the lives of three characters and how basketball constantly affects their lives.

Manga, 31 vol, 1990
Me:-
Author:10
How can I not mention this beauty in a list with all the best mangas?
Released in Shounen Jump but don't let that turn you off cause it's the legend that inspired every other good sports manga in existence, by the one and only, Takehiko Inoue.
Released in Shounen Jump but don't let that turn you off cause it's the legend that inspired every other good sports manga in existence, by the one and only, Takehiko Inoue.

Manga, 3 vol, 1998
Me:-
Author:9
Focuses on different incidents that occur in the protagonist's village following the curse of the spiral.

Manga, 37 vol, 1998
Me:-
Author:10
Based on the real life Japanese swordsman Miyamoto Musashi. Adaptation of the novel of the same name by Eiji Yoshikawa.

Manga, ? vol, 2005
Me:-
Author:10
Really, it is not as much about fighting as you might be led to think it is. It is mainly focused on the effects of war and not on war itself and the idealogy of our protagonist.

Manga, 1 vol, 2008
Me:-
Author:8
A prisoner and an ex-pianist meet under unusual circumstances.