The story of the manga centers around Marimo Nogami, a usually quiet fourth-grade girl in elementary school. However, a certain incident leads to Marimo's personal strength blossoming.

Two children, Marin and Yamato, found a mysterious fairy in a park.

Miki Koishikawa lived a normal life – until her parents tell her they’ll get divorced.. She doesn’t agree, until she meets Yuu Matsuura… the handsome son of another couple, with whom her parents are switching spouses. They all live together now in an enormous house, and Miki and Yuu find themselves falling in love. They’ll have to struggle with their own feelings, other people who want to be with them, and whatever Lady Luck and Fate throws in their ways…

Miki Koishikawa is a high school student who enjoys a very simple life. However, her ordinary life is about to be turned upside down, and she may not be able to handle everything that is coming her way. After a very "fun" holiday in Hawaii, her parents have decided to get a divorce. As if this wasn’t enough of a shock for the poor girl, she also discovers that they will soon be re-marrying and swapping partners with another couple who they met on holiday. In order to include Miki in this shocking turn of events, they ask her to give the new couple a chance, and set up a dinner date with everyone. Miki may have tried to be emotionally prepared for her new parents, but what she was not expecting was their handsome son Matsuura Yuu. Miki develops an instant crush for Yuu. What starts off as a lovely friendship between them soon develops into romantic feelings which they are both finding hard to control. But more trouble is ahead in their relationship, as both Miki and Yuu have admirers of their own who are trying very hard to keep them separated.

Miki Koishikawa lived a normal life – until her parents tell her they’ll get divorced.. She doesn’t agree, until she meets Yuu Matsuura… the handsome son of another couple, with whom her parents are switching spouses. They all live together now in an enormous house, and Miki and Yuu find themselves falling in love. They’ll have to struggle with their own feelings, other people who want to be with them, and whatever Lady Luck and Fate throws in their ways…

A prelude to Marmalade Boy the TV series. Yuu remembers the day when his parents decided to divorce each other and remarry with another married couple. Troubled by the news, Yuu decides to take a walk, on which he spots a girl he falls in love with at first sight. He decides to follow this unaware girl and falls more in love with her. However he discovers who the girl really is...she's the daughter of his parents' new lovers.

My mother and my brother actually wanted to sell themselves to the violent male in the village for 30,000 yuan! In order not to be tied to the old man, the desperate Ye Youyou had to lie that he had married a rich man in the city. Unexpectedly, the president who casually identified it unexpectedly came to the door to propose! God, have we never seen it before? !

Sabina returned to her hometown with her boyfriend. They were going to get married soon. However, she was forced to be the bride of the River God by accident. Fortunately, a Mysterious Man saved her. After that, that man started to go after her. Sabina had thought that they wouldn't fall for him, but after experiencing ups and downs together, they fell deeply in love. Whether the couple can have a happy ending?

The annual meeting of the company, was drunk by everyone... I didn't expect to wake up the next day with a man! What a bloody way to wake up!! Since fate has arranged for us to meet, let's have a try..

Mars is now almost entirely covered in water. Humanity exists in large city-ships that float through the open seas. But life is hard for those who live on Mars—the economy is in bad shape, work is scarce, and food is expensive and highly prized. Gram and his friends try to do the best they can, but the work keeps drying up. Some have taken to a life of piracy to combat the corruption in the government; one such group is the pirates of the feared Ship of Aurora. And the Earth government, which rules Mars, has dispatched a new team of military pilots to combat them. In their specialized mecha called Round Bucklers, they must make the seas of Mars safe for humanity. Caught in the wrong place at the wrong time, Gram finds himself on the run with the most notorious pirates on Mars. But here's the thing—he's starting to like them! (Source: Bandai Entertainment)

* Based on the Playstation 2 game with the same name.In 2016, a manned probe sent from Earth to investigate Mars explodes in Earth's atmosphere, causing fragments assumed to contain a DNA sample of a possible Mars inhabitant to fall on Japan.People all over Japan are infected by the mutation-inducing virus and are thus given the name Iseki-jin (relic people). An organization called AAST is founded, which in cooperation with Structure Doctor Hiroshi Hyuga develops a suit, "Mars", as a trump card against the relic people. Whoever wears the suit obtains super powers, but only a few genetically compatible people are able to wear it. Tairu, the son of the doctor, was the first suitable person.One of the fallen fragments is being transported to a laboratory in the United States for an analysis when the transfer is intercepted by the relic people. Now Tairu has to fight and defend humanity's chance to bring an end to the incident.

Mars Red takes place in 1923, and vampires have existed for quite a while. But now, the number of vampires is increasing and a mysterious, artificial blood source called Ascra has appeared. The Japanese government, in turn, creates "Code Zero," an unit within the army tasked with taking down the vampiric forces. And what better way to track vampires than by using vampires? Created by Lieutenant General Nakajima, this unit has historically been in the business of information war, but has been re-assigned to solve the vampire crisis.