This is a fluffy romantic comedy about a dull and quiet guy, and a very ordinary girl.

Eris Boreas Greyrat is a former noble girl, who one day was transported to the other side of the world with her cousin Rudeus. She grew as a swordswoman, but ultimately was unable to save Rudy as he was nearly killed. Deciding that she wants to be someone who can support him rather than the other way around, Eris decides to leave Rudeus and go on her own journey.

This is a spinoff of Mushoku Tensei, which splinters off from the main manga at around chapter 51 (volume 6 of the light novel, first season of the anime).

IT'S A PURE COMEDY.
The romcom vibe manga，references about anime, film, music and all,
The pretty girl and the handsome guy in the school are auctually 残念, strong-roast: ON

An upright and clean handed person, Kusakabe has no experience in dating. Wishing for sexual desire and love to go into ruin, he keeps his distance away from them. However one day, a cute neighbor, Hiragi-san, appears before him and asks him to hand over his used tissues to her!? And so begins the story of a serious guy and a neighbor succubus, a one shot heart thumping comedy!!

From MangaHelpers:
Hana, a high-schooler that is known as the cutest girl in school, gets pulled into a supernatural event while on a beach trip with her friends. This event, called a "Red Night Eve" involves a transformed extremely massive shark, which targets Hana while she's swimming! Luckily, she's rescued by the siblings Yayako and Yuuto Kagimori, students from her school who know all about these occurrences, and who even have a support program AI named Acacia in their tablet to help them. Not long after, Hana and the siblings are involved in another event, this time involving her precious class pet parakeet being transformed into something monstrous. With all these supernatural events, Hana's life is never going to be the same.

A boy is initially overjoyed at the news of him having an older sister, due to his father remarrying to a woman who has a daughter. That is, until he finds out that his new sister is actually his school's strict PE teacher, Shina. With his father going off to live with his new wife, the boy will live with alone with his new sister. In their new life together, the boy finds out that Shina at home is completely different from Shina at work: clumsy, scared of insects, and kind.

Due to a mistake one night, I became the target of the most obsessive man and a villainess!

After possessing Ripley, a count’s daughter and an extra in a novel, I became the female lead. Since this is the case, I will try to enjoy the riches and luxuries of a nobleman that I couldn’t experience in my past life.

I can remember up to drinking alone in a corner at a party… but I woke up the next day in the male lead’s bed!

Ripley became the target of the villainess after the male lead’s remarks that she should be responsible for spending their first night together. Knowing the fate of the female lead, Ripley tries to get rid of the male lead by causing trouble, not washing, and all sorts of things. Nevertheless, the male lead’s unwavering single-minded heart begins to shake.

Based on the webnovel written by HWANG DoTol with insert art by MSG

Tomari has suddenly been appointed to Enra Hall to be the aide to the King of Hell. A contract love comedy unfolds.

It's the year 305 of the Alcian calendar, and the world is currently controlled by "numbers." Every human born is branded with a "Count." This Count can be anything; the amount of kilometers walked, or the amount of people who have said your food is tasty. If your Count drops to 0, you will be sent into the Abyss. After Hina's mother's Count dropped to 0, her last request was for Hina to look for the Legendary Flying Ace.

Alien who thought that it would be better if Earth was just destroyed due to its civilization being at a far lower level than hers reconsiders it after seeing cute things.

(Source: Shueisha, translated)

A teenage boy who wants to die finds a yandere girl to do the job for him.

Keita Suminoe has two older (not blood-related) twin step-sisters who love him in a lustful way and have no problems expressing it. They even like to compete about it; much to the laughter of his friends (which he usually endures without problems). One day they come to his school to give him his lunch, resulting in him getting angry due to the atmosphere. To counteract his anger, they confess their tender feelings for him in front of everyone and leave. Feeling sorry he chases after them and says that he'll study hard in order to get in the same high school as them.

Fukamori Shizuku, a monstrous girlfriend who attacked me in my first day of high school. Every day I spend with this big deceiver is in ultra hard mode due to some serious circumstances!!!! A big trouble!

Fifteen-year-old Ishimori Uka is a very shy girl that can't stand being in front of someone. One day she meets a boy on the streets who's just as refreshing as lemon soda. He helped her when she was bullied and that boy made her wanting to change so she can properly express herself.

The "love, revenge, and slight euphoria" story centers on a young man who swears revenge against the yakuza. He studies the art of the "assassination fist" with all his might, and becomes an adult. But this man who is a genius at his martial art form realizes his techniques cannot actually be used to kill anyone.

Within this battlefield is a cat. Arthur Rain is a mercenary and skilled sniper who is feared as the “Wild Hunt”. As he prepares for another day of sniping, a black cat appears before him. A cat that seemed like a stray who had taken up residence on the battlefield, happily playing with an empty bullet cartridge like it was a toy. This is the story of one man and one animal living in a deadly battlefield, trying to make the days a little more lively.

Takase is almost opposite of his brother weak and not good at school. He recently moved in at his brother's house, who is a married guy. He is placed under an exceptional coach to improve his physical health, and the coach also know as 'Venus of track' is none other than his sister in law. She is developing a new technique to improve body at a faster rate by management of testosterone levels in the body, in other words sexual desire management. She calls it 'absolutel obedience.' And Takase have to go under it to improve himself. This changes his life drastically, read and find out more.

The life of two slaves with their timid hero level master.

A boy falls in love with a girl, who he witnesses urinating in public.

Unable to confess, he is gifted with by a deus ex machina with the girl's sudden transfer to his school. Never minding the coincidence, he immediately calls out to her, and is overjoyed to find out that she wet her pants the moment she saw him.

Hijinks ensue as the two strike up a deal to partake in their darkest, most wild urine-based fetishes. While the two engage in watersports, DRAMA ensues as they begin to fall in love with each other instead and question the NATURE of PISS.