Asexual and Aromantic Manga
Manga
Manga with asexual (ace) and/or aromantic (aro) characters. Some are headcanons- those are indicated by question marks.
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)

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)

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)

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)

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)

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)

Manga, 3 vol, 2019
Me:-
Author:7
Yuriko "Yuri" Hanazono (aroace) (main)
Gilbert "Gil" (gay and ace) (supporting)
Gilbert "Gil" (gay and ace) (supporting)

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)

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)

Manga, 5 vol, 2015
Me:-
Author:-
Futaba Kiryuu (aroace) (protagonist)

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)

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

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)

Manga, 4 vol, 2018
Me:-
Author:7
Ayase Takebe (ace? and lesbian) (protagonist)

Manga, 8 vol, 2004
Me:-
Author:-
Akira "A-chan" Okudaira (ace/demisexual? and lesbian) (main)

Manga, ? vol, 2021
Me:-
Author:7
Takeda (aroace) (protagonist)
Arita (aroace) (main)
Arita (aroace) (main)

Manga, 5 vol, 2019
Me:-
Author:8
Yuuri Aoyama (aroace) (main)
Yuuri’s friend (ace) (minor)
Yuuri’s friend (ace) (minor)

Manga, ? vol, 2019
Me:-
Author:-
Shouko Tanimoto (aroace) (supporting)

Manga, 1 vol, 2018
Me:-
Author:-
Machi Morimoto (demiromantic? and lesbian) (protagonist)

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)