Asexual and Aromantic Manga
Manga
Manga with asexual (ace) and/or aromantic (aro) characters. Some are headcanons.
Not on MAL (yet):
Soujitsu/Soushitsu
Mio (aro) (main)
1% no Koi: Doutei no Boku to Asexual na Kanojo
Ritsuka Mizuno (straight and ace)
17.3 about a sex: Watashitachi no Real
Tsugumi Hara (aroace) (main)
Koi wa Nai Kedo, Kekkon Shimasu!
Sachiko (aroace) (main)
Hadashi no Seimei
Asuka Sakurai (aro) (main)
Love-Razu: Koi ga Wakaranai Danjo no Hanashi
Hayami (aro) (main)
Tsukase (aro) (main)
Tamago no Tsurezure
Iori Morita (aro?ace) (protagonist)
Friends Until the Fourth Verse
Jin Hyung-In (gay and ace-spec) (main)
Not on MAL (yet):
Soujitsu/Soushitsu
Mio (aro) (main)
1% no Koi: Doutei no Boku to Asexual na Kanojo
Ritsuka Mizuno (straight and ace)
17.3 about a sex: Watashitachi no Real
Tsugumi Hara (aroace) (main)
Koi wa Nai Kedo, Kekkon Shimasu!
Sachiko (aroace) (main)
Hadashi no Seimei
Asuka Sakurai (aro) (main)
Love-Razu: Koi ga Wakaranai Danjo no Hanashi
Hayami (aro) (main)
Tsukase (aro) (main)
Tamago no Tsurezure
Iori Morita (aro?ace) (protagonist)
Friends Until the Fourth Verse
Jin Hyung-In (gay and ace-spec) (main)
Mine-kun wa Non-Sexual
Mine-kun is Asexual

Doujinshi, 1 vol, 2019
Me:-
Author:7
Mine (bi and ace) (main)
Last Gender: Nanimono demo Nai Watashitachi
Last Gender: When We Are Nameless

Manga, 3 vol, 2021
Me:-
Author:7
Yo (sexuality questioning/maybe aroace) (main)
Amiru Arata (aro and straight?) (supporting)
Shiho (lithromantic and queer) (supporting)
Kei (grayromantic and NBLW) (supporting)
Amiru Arata (aro and straight?) (supporting)
Shiho (lithromantic and queer) (supporting)
Kei (grayromantic and NBLW) (supporting)
Yagate Kimi ni Naru
Bloom into You

Manga, 8 vol, 2015
Me:-
Author:7
Yuu Koito (demiromantic, demisexual/ace, and lesbian) (protagonist)
Touko Nanami (lithromantic and lesbian) (main)
Seiji Maki (aroace) (supporting)
Touko Nanami (lithromantic and lesbian) (main)
Seiji Maki (aroace) (supporting)
Hatsukoi, Catharsis.
First Love, Catharsis.

Manga, 1 vol, 2019
Me:-
Author:6
Ikki Tsukishima (gay and ace) (main)
Kaketa Tsuki to Doughnut
Doughnuts Under a Crescent Moon

Manga, 4 vol, 2019
Me:-
Author:8
Hinako Uno (demiromantic, ace?, and lesbian) (protagonist)
Asahi Satou (demiromantic, ace?, and lesbian) (main)
Asahi Satou (demiromantic, ace?, and lesbian) (main)
Kimi no Sekai ni Koi wa Nai
Is Love the Answer?

Manga, 1 vol, 2020
Me:-
Author:7
Chika Hanai (aroace) (protagonist)
Mitsuru "Ume" Umezaki (aroace) (main)
Shinobu Ishii (aroace) (supporting)
Miya (aroace) (supporting)
Mitsuru "Ume" Umezaki (aroace) (main)
Shinobu Ishii (aroace) (supporting)
Miya (aroace) (supporting)
Yuri to Koe to Kaze Matoi
Lilies and Voices Born Upon the Wind

Manga, 4 vol, 2018
Me:-
Author:7
Matoi Nonoshita (demiromantic, ace, and lesbian) (protagonist)
Yuriko Sae (aroace) (main)
Rie Inose (pan and demisexual) (supporting)
Yuriko Sae (aroace) (main)
Rie Inose (pan and demisexual) (supporting)
Watashi wa Kabe ni Naritai
I Want to Be a Wall

Manga, 3 vol, 2019
Me:-
Author:7
Yuriko "Yuri" Hanazono (aroace) (main)
Gilbert "Gil" (gay and ace) (supporting)
Gilbert "Gil" (gay and ace) (supporting)
Tsukuritai Onna to Tabetai Onna
She Loves to Cook, and She Loves to Eat

Manga, ? vol, 2021
Me:-
Author:8
Yuki Nomoto (demiromantic, ace?, and lesbian) (protagonist)
Totoko Kasuga (demiromantic, ace?, and lesbian) (main)
Kaname Yako (ace and lesbian) (supporting)
Totoko Kasuga (demiromantic, ace?, and lesbian) (main)
Kaname Yako (ace and lesbian) (supporting)
Shuuseki Kairo no Himawari
IC in a Sunflower

Manga, 1 vol, 1994
Me:-
Author:6
(Chapter 1: Gum no Iranai Kodomo-tachi/Keep Those Condoms Away From Our Kids)
Irori Miyawaki (aroace?) (protagonist)
Irori Miyawaki (aroace?) (protagonist)
Kiryuu-sensei wa Renai ga Wakaranai.
Miss Kiryuu doesn't know what love is.

Manga, 5 vol, 2015
Me:-
Author:-
Futaba Kiryuu (aroace) (protagonist)
Seibetsu "Mona Lisa" no Kimi e.
Just Like Mona Lisa

Manga, 10 vol, 2018
Me:-
Author:6
Hinase Arima (demiromantic, bi?, and ace?) (protagonist)

Manga, 3 vol, 2011
Me:-
Author:6
Ruki Shishido (ace and lesbian) (protagonist)
Haru to Ao no Obentoubako
Haru and Ao's Lunch Box

Manga, 6 vol, 2018
Me:-
Author:7
Haruha "Haru" Kino (aroace) (protagonist)
Seibetsu X
X-Gender

Manga, 2 vol, 2020
Me:-
Author:7
Asuka Miyazaki (NBLW and ace-spec?) (protagonist)
Houseki no Kuni
Land of the Lustrous

Manga, 13 vol, 2012
Me:-
Author:8
All gems (pan and ace) (main and supporting)
Onna Tomodachi to Kekkon Shitemita.
I Married My Female Friend

Manga, 4 vol, 2020
Me:-
Author:7
Kurumi Sera (demiromantic and lesbian) (protagonist)
Ruriko Aizawa (demiromantic and lesbian) (main)
Ruriko Aizawa (demiromantic and lesbian) (main)
Watashi no Kobushi wo Uketomete!
Catch These Hands!

Manga, 4 vol, 2018
Me:-
Author:7
Ayase Takebe (ace? and lesbian) (protagonist)
Aoi Hana
Sweet Blue Flowers

Manga, 8 vol, 2004
Me:-
Author:-
Akira "A-chan" Okudaira (ace/demisexual? and lesbian) (main)
Ame ga Shinai Koto
What is This Thing She Doesn't Do

Manga, 2 vol, 2022
Me:-
Author:7
Ame Hanayama (aro) (main)

Manga, ? vol, 2021
Me:-
Author:7
Takeda (aroace) (protagonist)
Arita (aroace) (main)
Arita (aroace) (main)
Koisuru Meiga
The Masterpiece I Love

Manga, 2 vol, 2019
Me:-
Author:7
(Girls at the Piano)
Kanon (aro?) (protagonist)
Kanon (aro?) (protagonist)
Shimanami Tasogare
Our Dreams at Dusk: Shimanami Tasogare

Manga, 4 vol, 2015
Me:-
Author:8
Dareka/Someone/Anonymous (aroace) (supporting)
Kanojo ni Naritai Kimi to Boku
I Wanna Be Your Girl

Manga, ? vol, 2018
Me:-
Author:8
Sasaki-sensei (aroace) (supporting)
Uchi no Musuko wa Tabun Gay
I Think Our Son Is Gay

Manga, 5 vol, 2019
Me:-
Author:8
Yuuri Aoyama (aroace) (main)
Yuuri’s friend (ace) (minor)
Yuuri’s friend (ace) (minor)
Ore Monogatari!!
My Love Story!!

Manga, 13 vol, 2011
Me:-
Author:-
Makoto "Suna" Sunagawa (aroace?) (main)
Gekkan Shoujo Nozaki-kun
Monthly Girls' Nozaki-kun

Manga, ? vol, 2011
Me:-
Author:-
Umetarou Nozaki (aroace?) (main)
Genderless Danshi ni Aisareteimasu.
My Androgynous Boyfriend

Manga, 5 vol, 2018
Me:-
Author:8
Kira (aro) (supporting)
Devils Line
Devils' Line

Manga, 14 vol, 2013
Me:-
Author:-
Akihito Kanzaki (gay/achillean and ace) (supporting)
Housekishou Richard-shi no Nazo Kantei
The Case Files of Jeweler Richard

Manga, ? vol, 2019
Me:-
Author:-
Shouko Tanimoto (aroace) (supporting)
Boku no Hero Academia
My Hero Academia

Manga, 42 vol, 2014
Me:-
Author:-
Mina "Pinky" Ashido (aro) (supporting)
Oya ga Urusai node Kouhai (♀) to Gisou Kekkon Shitemita.
I Married My Best Friend to Shut My Parents Up

Manga, 1 vol, 2018
Me:-
Author:-
Machi Morimoto (demiromantic? and lesbian) (protagonist)
Hananoi-kun to Koi no Yamai
A Condition Called Love

Manga, ? vol, 2017
Me:-
Author:-
Hotaru Hinase (demiromantic? and straight) (protagonist)

Manga, 1 vol, 2007
Me:-
Author:6
(Chapter 1-2 Ai Dano Koi Dano)
Nonami (demiromantic and gay) (main)
Nonami (demiromantic and gay) (main)