Shinonome Ren suffers from an unusual disorder that turns him into a child whenever he is stressed, and the only way to return to normal is to be pampered by his wife. *Note: Originally self-published by the author, it was picked up for commercial release by Kadokawa on 2023-01-12*

Ikuhara Kaeri, a 28 year-old zookeeper, finds himself dissatisfied with the limited amount of zoological work left to be done on Earth. Ikuhara suddenly finds himself in a fantasy world filled with unfamiliar flora and fauna, and begins his quest to build a zoo filled with monsters.

Alien lifeforms have taken refuge on Earth to start their lives anew, however these beings don’t seek cohabitation, they want to phase humanity out; Working together, these Aliens prey on human flesh and spiritual energy and can implant their essence on human females to bear their children. Benimaru is one of these children, but his mother also happened to be a Medium. By manipulating Benimaru’s spirit while he was in the womb, she managed to give him a human heart. For this, she was brutally killed and devoured by Benimaru’s alien father. From that point on, Benimaru swore to exterminate these creatures. Half-human and half-alien, one man wages war against an entire race!

Masashi Kitazawa, a second-year high school boy, hides a traumatic secret of being fat as a child! After a strenuous diet and strength-training regimen throughout junior high, Kitazawa has grown to become a handsome young man and he is content to lead an ordinary high school life, but....... Starting the new semester of the second year, Kitazawa finds himself in Class A, filled with the most popular and good-looking people in his grade. Moreover, he receives a secret invitation from the most beautiful girl in school, Ayame Yagyu......? This is a school comedy about the high-class beautiful people! (Source: Weekly Shonen Magazine, translated)

My first love, her name is Koga Gumomo. She was so much more beautiful and mature than a typical high school student, which attracted a great deal of jealousy and dislike. So much so that she was on the verge of jumping off the rooftop because of all the bullying she received. So, what can I do to help? "Why not have s\*x with me!" "............, you pervert! ...... (yuck!)" "Maybe so! But are you sure? If you die here, your last memory will be the confession of some pervert you don't even know! It would ruin the mood!" "............, what have you done! You pervert!" "I have my reasons. Because I love you more than anything in the world! Let's get married!" "What, ehhhh~~~............?" I will yell out my love until I die, if it will make a place for you in this world! The most stupid and straightforward protagonist in the history of romantic comedies and the cool, sullen JK will hook up for a romantic comedy with a sugar content of 100%! (Source: Dengeki Bunko, translated)

An anthology comic of Infinite Stratos by various mangaka.

A dark romance story about a high school boy who falls helplessly in love with a beautiful girl who has to eat people to survive.

Chiaki is good-looking, academically excellent, athletic, and born into a well-off family with two beautiful sisters. He leads a smooth sailing life, but he still has one problem. He's not popular with girls, and has never once been in love! He vowed to make a fresh start in high school and spend his days being pampered by girls. The morning after making this vow, Chiaki wakes up to find that he himself has turned into a girl. He is shocked to find an unfamiliar face staring back at him in the mirror, but when he looks again, he sees a very cute girl in the reflection. He immediately goes to show off his new look to his twin sister Kaede, who happens to be very popular with the girls, but there is also something very strange happening to her… (Source: Young Animal, translated)

The ruler of the demon world has come, with only his trusty assistant, to conquer the modern day human world! It's a little rough from the start, because most people just seem to think he's a cosplayer. Also, due to the worst recession the demon world has had in 500 years, though, he's a little underfunded. For his conquest, he's got to fight the Hero of the human world. She's Ichikawa Kyouko, a distractingly pretty, tough, modern-day girl who happened to pick up the giant sword that marks her as the chosen one. (Source: MangaHelpers)

In a post-Apocalyptic world, Mimi works as a waitress in the pancake cafe Blue Bird. They are frequently attacked by bandits, but Mimi has gotten used to dealing with them. Source: MyAnimeList

When forcibly injected with the DNA of Musashi - the legendary swordsman--by the "Akai Umi" (Red Sea) secret organization, Hagane Yakushimaru becomes a master fencer with supernatural powers. She sets off to rescue her parents who have been abducted by Akai Umi, making friends and foes with supernatural beings (parasite projects) who have also been injected with the DNA of other historical figures. What is Hagane's secret? Why is she the only successful female DNA injection? What exactly is the project called the "Revelations of the New Millennium"? (Source: kodanclub.com)

The Spin-off of Kichikujima focusing on slice of Life romance. *Note: Includes 1 extra chapter.*