Naoe-kun is a massage therapist at the "Smiley Boar" clinic. One day he gets a new patient named Erufuda-san, who turns out to be an Elf from a different world. All the junk food of this world has taken its toll on her figure. Now she'll try to lose weight with the help of her trusty massage therapist. But Erufuda isn't the only one from her world who's been affected.

From mangaupdates:

Born into a wealthy family, she lost her mother at a young age.
She is Riona, a girl who was raised by a single father.
At the girls' school she attends, she has many friends and a special partner of hers,
She lives feeling a little lonely that her busy father has just left her house.

One day, her father bought a robot that she said was her "housemaid"
She witnessed the act of "Forty"...?

A girl who wants her affection and a robot who doesn't know her feelings.
A dramatic story of gems!

From Phoenix Serenade Scans:

Meet Colette, a young doctor. Since she's the only doctor in town, she has to attend to everything, and quite honestly, she thinks she needs a break. One day, she's so frazzled that she jumps into a well. But, she didn't die? Instead, she finds herself in the underworld, where she encounters Lord Hades. Somehow or the other, she becomes Hades' doctor. Follow Colette in her new (though still busy) life, now with Hades thrown into the picture!

There has never been a hero like this before!
Is he a hero or an actual demon?

Kang Hansoo was summoned to this world with his classmates.
His classmates were amazed by this brand new world and the magic in it, but the only thing Hansoo wanted to do was quickly return home.

“Why would I give up my warm, comfortable house to have an adventure in this world…?

Even the goddess that summoned me said that if I wasn’t willing to, there was nothing she could do to force me and promised to return me to my original world.
She did teleport me, but…

When I opened my eyes, I was still in this world!
All of my friends were gone, and the only thing around me was monsters!!

A goddess tricked me…?
How do I get back home now…?
More than that, how do I survive here…?!“

"If you blush, you lose."
Living by this principle, the middle schooler Nishikata gets constantly made fun of by his seat neighbor Takagi-san. With his pride shattered to pieces, he vows to turn the tables and get back at her some day.
And so, he attempts to tease her day after day, only to find himself victim to Takagi-san's ridicule again sooner than later. Will he be able to make Takagi-san blush from embarrassment even once in the end?

Note: Won the 66th Shogakukan Manga Award for the shounen category in 2021.

Note: This is a direct sequel of Senyuu Main Quest Part 1, which should be read before starting Part 2.

Hero Lyman and Royal Soldier Toryuu, sent off by the King to subjugate the Demon Lord. The two of them are facing off against rampaging demonic beasts to protect some children. But just when they thought all hope was lost... he appears! Who's grown stronger than anyone could've ever believed! What kind of battle will he show us?

Rib Ma- whoops, that is, Hero Alba's new adventure starts now!

(This is a manga remake of Season 2 of the webtoon "Senyuu." Most of the plot remains the same, but with some additional scenes added and minor changes to dialogue.)

Once upon a time in the city of Kobe, there was a girl and a boy. Both lived under abusive households, and the two swore an oath to be together until death. However, they are quickly separated, seemingly forever. That is, until a chance encounter reunites them three years later...

A kouhai confesses to a senpai who doesn't want to date them.

Good-for-nothing Shibata Michiko is back! And with her back are her never-ending troubles. Will she be able to stand on her own feet this time around or will she have to keep on relying on her superior, Kurosawa Ayumu, to get her out of her misery? Hop on board to take a ride for a fun and romantic journey with a woman too good for her own idiocy and a man too good for his own kindness.

Minato is a college student who died in a plane crash and was reincarnated in a fantasy world. He was raised alone in the wilderness by his succubus mother, and now he tries to make his way as an adventurer

Yato is a minor god whose dream is to have a lot of followers worshiping him and praying to him. Unfortunately, his dream is far from coming true since he doesn't even have a single shrine dedicated to him. To make things worse, the only partner he had to help him solve people's problems, had just quit the job.

His godly existence and luck just might change after he stumbles upon Iki Hiyori and saves her life—a feat which also leaves her in quite a predicament as she is stuck with him until her problem gets resolved. Together with Hiyori and his new partner/weapon Yukine, Yato will do everything he can to gain fame, recognition and just maybe, one shrine dedicated to him.

This is a world of magic where magic is used for everything. But deep in the forest exists a young man who spends his time training and bulking up. He can't use magic, but he enjoys a peaceful life with his father. But one day, his life is put in danger! Will his muscular body protect him from the magic users who are out to get him? Powerfully trained muscles crush magic as this abnormal magical fantasy begins!

From MangaHelpers:
From the perspective of an alien planet with super-advanced technology and tiny (1/60th the size of a human) inhabitants, planet Earth was the perfect location to banish their worst criminals. Five of said criminals were sent to the planet to be exiled, attached to little critters like frogs and rabbits so they can never be fully active. Due to an accident, these five criminals managed to escape and attach themselves to five different girls that were nearby. The one responsible for the banishment of these five criminals now must detach them from the girls by mouth-to-mouth release.

Toradora!'s story begins with the male protagonist Ryuuji Takasu who is frustrated at trying to look his best as he enters his second year of high school. Despite his gentle personality, he has a natural outer-appearance which makes him look like an intimidating delinquent so he is utterly hopeless about his chances of getting a girlfriend anytime soon, and does not have many close friends either.

After being greeted by his hungover mother in the morning, Ryuuji goes to school and is happy to find that he gets to be in the same class as his best friend, Yūsaku Kitamura, and crush, Minori Kushieda. However, it is then that he unexpectedly knocks into "the school's most dangerous animal of the highest risk level" - Taiga Aisaka - who just happens to also be in his class.

The girl I love is my brother's ex-girlfriend. She's a trashy girl who's clingy, stubborn, and takes advantage of my weaknesses. But I can't seem to stop our relationship.

High school girl Akari mourns the loss of her mother who died when she shielded Akari from an oncoming truck a year ago. She discovers an adventure game her mother had gotten for her birthday some time ago, but never had a chance to finish. Suddenly, she is summoned to be the mother of the Demon Lord's 10 children in another world...

In the Kingdom of Bandiera, the royal prophet has announced the incoming resurrection of the Demon King, 500 years after the first King sealed it.

Four heroes were thus chosen and sent to the location of the Demon's prison. Meanwhile, Charlie Barett, a modest gate keeper, is stuck at the Royal City with a job he hates, spending his days complaining to his captain and his co-workers; one of which is the noticeably generic-looking Jimmy Monbarn.

A female author of lewd mangas frequently finds herself without motivation to work.
In those cases she calls over her married neighbour, Nanako-san.

16 year old Miyahara Momiji starts working part-time at an izakaya called Koharuya.

Hanadera Keisuke is obsessed with yuri, and he's read all the Yuri Hime manga. However, he is sadly aware that there is one thing a lesbian romance absolutely does not need-- him. One day, a student named Akane transferred to his class from an all-girls school. She used to go to school with another classmate, Saori, and Akane immediately tried to pick up their friendship. However, her clinginess, desire for alone-time, and intensity all convinced Keisuke that he was finally seeing yuri in reality! Soon enough, Keisuke had stalked them enough to see a love triangle between Saori, newcomer Akane, and their standoffish classmate Matsuoka. Is there truth to his observations, or is he viewing the world through yuri-tinted glasses?

Note: Comic Yuri Hime is not a seinen publication. It doesn't come under any of the four major demographics.