Chill, mellow, wholesome
Manga
Sometimes romantic, sometimes just warm.

Manhwa, ? vol, 2022
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Author:-
Really funny, straightforward romantic relationship even if it does start with the 'marriage' gimmick. No unnecessary sidetracking.
Bokura wa Minna Kawai-sou
The Kawai Complex Guide to Manors and Hostel Behavior

Manga, 11 vol, 2010
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Author:9
One of my all-time favorites. Funny, sweet, largely inoffensive drama-wise, though it has a few characters that are... uh, acquired taste.
Karakai Jouzu no Takagi-san
Teasing Master Takagi-san

Manga, 20 vol, 2012
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Author:9
One of my all-time favorites. Romance doesn't really happen until the last 20ish chapters, so it best works as a slice-of-life read with some nice comedy/chill.
Soredemo Ayumu wa Yosetekuru
When Will Ayumu Make His Move?

Manga, 17 vol, 2019
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Same author as Takagi-san, and similar vibes. Lite on romance, but high on sugar.
Sono Bisque Doll wa Koi wo Suru
My Dress-Up Darling

Manga, ? vol, 2018
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Lighting-in-the-bottle manga with nice art, okay-ish romance progress, & some light dabbing into borderline-awkward drama.
Ojisama to Neko
A Man & His Cat

Manga, ? vol, 2017
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Just... sweet. That's all. Whether you've ever owned a cat or not, it's a heartwarming read.
Boku no Kokoro no Yabai Yatsu
The Dangers in My Heart

Manga, ? vol, 2018
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Author:8
Fairly straightforward middle-school romance. If you're annoyed by the initial gimmick, don't worry, it's dropped relatively quickly as it then becomes your standard shounen romance (sidestepping most of the annoying tropes, though).
Aishiteru Game wo Owarasetai
I Want to End This Love Game

Manga, ? vol, 2021
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I'm on the fence when it comes to this one, to be honest. It starts sweet, funny, and lighthearted, but around chapter 35~, it starts becoming more and more dramatic, often bordering melodramatic. Will revisit in the future.

Manga, 3 vol, 2019
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Author:-
Read it mostly for fluff and comedy. From what I remember, romance is very lite until the end (as I think it got axed?).
Tsukushitagari na Uchi no Yome ni Tsuite Deretemo Ii ka?
We Started a So Sweet Newlywed Life.

Manga, 3 vol, 2021
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Mostly just straightforward fluff.
Tedama ni Toritai Kurokiya-san
Kurokiya-san Wants to Lead Him Around by the Nose

Manga, 5 vol, 2019
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Largely straightforward 'pure gyaru' rom-com. Some over the top comedy, decent-ish romance progress.

Manga, 2 vol, 2021
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Mostly standard shounen rom-com. Some fluff, some comedy, some love. Fairly short, easy read.
Nega-kun to Posi-chan
Negative Boy Nega-kun and Positive Girl Posi-chan

Manga, 4 vol, 2019
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Can be a bit annoying at times, but mostly a straightforward rom-com with an over-the-top gimmick.

Manga, 2 vol, 2021
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Largely a straightforward, ecchi-ish rom-com.
Natsuaki-kun wa Kyou mo Kokuhaku shitai
Doing His Best to Confess

Manga, 5 vol, 2020
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Author:-
Pretty sweet, straightforward, and easy to read.
Telework Yotabanashi
Home Office Romance

Manga, 1 vol, 2020
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Short, straightforward, and surprisingly adult (while still lighthearted) romance.

Manga, 2 vol, 2019
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A decent gimmick, likeable characters, and some nice comedy.

Manga, ? vol, 2022
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Haven't read the light novel so I can't comment as to how good of an adaption it is, but on its own, it's a fairly nice rom-com (mostly rom, tbh), with some relatively well-written characters.
Kakunaru Ue wa
Now That We Draw

Manga, ? vol, 2023
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A surprisingly decent quasi-parody of the genre with quite a lot of heart.

Manga, ? vol, 2022
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Fairly standard aggressive girl vs awkward dude shounen romance, except it's far more liberal with romance than most other shounen rom-coms.

Manga, ? vol, 2023
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Solidly good. Quiet/mysterious girl vibes if you're into it (while still secretly sweet).

Manga, ? vol, 2023
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Surprisingly fun, with the caveat that it has the potential to become melodramatic in the future. So far, however, all chapters felt quite lighthearted & inspiring, and while it's somewhat lite on romance, it's quite funny & there 'is' progress.
Tonari no Neko to Koi Shirazu
Learning to Love My Cat-like Classmate

Manga, ? vol, 2024
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