Manga with "Boring" Premises
Manga
Manga which feature subject-matters that would conventionally be considered "boring". There are some distinct subsets in this list.
Hana wa Saku, Shura no Gotoku
Flower and Asura

Manga, ? vol, 2021
Me:-
Author:-
A girl passionate about reading out loud joins a broadcasting club, learning the art of recitation during the process.

Manga, ? vol, 2008
Me:-
Author:10
Three close friends having pointless meandering conversations with each other.
Otoyomegatari
A Bride's Story

Manga, ? vol, 2008
Me:-
Author:10
A story taking place in central Asia that places an emphasis on depicting the culture. Some chapters have a particularly mundane focus.
Haruka na Machi e
A Distant Neighborhood

Manga, 2 vol, 1998
Me:-
Author:8
A meditative work of an old man travelling to the past.
Chichi no Koyomi
A Journal of My Father

Manga, 1 vol, 1994
Me:-
Author:9
A down-to-earth reflection on the past.
Shussan no Shikata ga Wakaranai!
I Don't Know How to Give Birth!

Manga, 1 vol, 2015
Me:-
Author:7
A humorous autobiographical account of a woman having problems giving birth.

Manga, 12 vol, 1988
Me:-
Author:-
(Someone else's endorsement): Goes into the technical details [pertaining to sake] while also serving as a greater tale on the agricultural shift of rice cultivation in the early 90s with the advent of biological agriculture.
Kami no Shizuku
The Drops of God

Manga, 44 vol, 2004
Me:-
Author:9
Characters describing wine in long passages.
Food Court de, Mata Ashita.
See You Tomorrow at the Food Court

Manga, ? vol, 2020
Me:-
Author:9
Two High School Girls talking about random things at a Food Court.
Munou no Hito
The Man Without Talent

Manga, 1 vol, 1985
Me:-
Author:9
Former mangaka who has begun to sell rocks.
Okite Kudasai, Kusakabe-san
Wake up please, Ms. Kusakabe

Manga, 2 vol, 2018
Me:-
Author:-
A girl who wants to do nothing but sleep in, while her boyfriend tries to make her go outside.
Maou Heika no Osouji-gakari
His Majesty the Demon King's Housekeeper

Manga, ? vol, 2019
Me:-
Author:-
Girl gets isekai'd but cleaning is the only thing on her mind.