After a traumatic incident, Jun Sakurada refuses to interact with the outside world and return to school--he even shuts out his sister, his closest friend. Jun spends most of his time online buying spiritual items that are obvious rip-offs. One day he finds a website that curiously enough asks him to put his order in his desk drawer. Thinking it's a joke, Jun plays along. The following day a suitcase arrives containing a doll named Shinku... that comes to life before his very eyes! Welcome to the world of Rozen Maiden, where Jun must enter an all-new reality to protect and serve a living doll...
(Source: Tokyopop)

[From AT-Translations]:

Based on an ero-game, Prism Palette is Peach-Pit’s (famous for DearS, Zombie Loan, Rozen Maiden and assorted other manga) first publication. It follows the main character, Masaki Shirai, as he spends his days at school, surrounded by beautiful girls.

The heroine of the story, Amu Hinamori, is a student at Seiyo Elementary. At first glance, her classmates refer to her as "cool and spicy" and rumors speculate about her personal life. However, her real personality is that of a very shy girl who has trouble showing her true personality. One night, Amu wishes for the courage to show her "would-be" self, and the next morning finds three brightly colored eggs—red, blue, and green—in her bed. At first, she is alarmed, but realizes she must have really wished to change. These eggs hatch into three Guardian Characters: Ran, Miki, and Su. The Guardian Characters aid Amu in discovering who she truly is and help fulfill Amu's dreams. Amu's life becomes much more complex as she struggles to deal with her "would-be" selves and the Seiyo Elementary's Guardians, who recruit Amu as the Joker to search for X Eggs and X Characters, the corrupted forms of peoples' dreams.

Meanwhile, the Easter Company is extracting people's eggs in search of a special egg called the Embryo. The Embryo is believed to grant any wish to the one who possesses it. However, the process creates X Eggs and X Characters.

Continues on "Shugo Chara! Encore!"

As a continuation of Rozen Maiden, the story starts with an older Jun, who is now a university student. While working at a bookstore as his part time job, he finds an unaddressed copy of the first issue of a weekly magazine "How to Make a Girl" containing a spring. He brings it home, and soon starts receiving further issues of the magazine by post, each issue having one part of a doll's body as a gift. One day, after putting much effort into assembling the fifth Rozen Maiden doll Shinku, he receives a notification that the publication has been cancelled, leaving him with an incomplete doll. Suddenly, he receives a mysterious text message from his old number, claiming to be the Jun Sakurada asking for help against the seventh Rozen Maiden doll Kirakisho...

Note: The official title of this Shueisha edition in Japanese is ローゼンメイデン in katakana, in order to set it apart from the title of the "original" Gentosha edition, which was "Rozen Maiden" in Latin letters while katakana only served as a pronunciation aid (furigana).

When a human is marked to die, a faint gray line that is invisible to most appears around their neck. As time passes, that ring becomes darker and darker, until it is eventually black, and that person dies. Kita Michiru has an unusual gift, she possesses "Shinigami eyes," which allow her to see these rings. When Michiru notices that two of the boys in her class, Akatsuki Chika and Tachibana Shito, not only have rings, but that they're jet black, they reveal to her that they were supposed to die in a tragic accident six months ago. With the help of the Zombie-Loan loan office, they were given a second chance at life, should they be able to pay for their debt by doing the work of Shinigami and killing malicious zombies. They petition Michiru to assist them in their efforts, and she finds her everyday life changing dramatically.

Chapter 1: Kuukai is asked to text Utau by Sanjou so she would not feel as alone/hurt about Ikuto's overseas travel in search of their father. Kuukai agrees to this and asks Utau out for one of their Ramen Challenges.

Chapter 2: Nagihiko isn't dancing as passionately as he used to, so his mother sends him on an assignment to find the "blooming flower" of his dance. He goes to look at the flowers, and spots Rima under the tree...

Chapter 3: Yaya's planning a celebration for the graduation of the other Guardians. She wants to have something explode out of a ball, but can't decide what to put in it. Kairi, who's in town for his sister's wedding, offers to help...

Chapter 4: Graduation has finally come and we see how everyone is moving on. And as Sanjo and Nikaidou's wedding nears, Amu who feels a sense of sadness that everything is ending goes to the amusement park which is currently being pulled down. But then the person on her thoughts appears before her...

Series of stories about Parasyte, from various notable mangaka.

1. Agonashi Gen to Ore wa Kiseijuu by Hiramoto Akira
2. Kisei!! Ekoda-chan by Takinami Yukari
3. PARAGANT by Nirasawa Yasushi
4. EDIBLE by Endo Hiroki
5. Migi no Tabi by Ueshiba Riichi
6. Perfect Soldier by Minagawa Ryouji
7. Kawari Mono by Kumakura Takatoshi
8. Oshiete! Tamiya Ryouko-sensei by PEACH-PIT
9. Lucy to Migi by Mashima Hiro
10. Konya mo Eat It by OHTA Moare

(Source: MangaUpdates)

"The story revolves around the fear of Kugiko-san, an urban legend spread around children. According to rumors, people who encountered Kugiko-san have had nails (kugi) driven into their eyes. A solitary male shōjo manga creator named "P" follows the truth behind the urban legend."
(Source: ANN)

"The plot ... takes place in a small town made up of many hills and slopes where Nishiki, a high-school girl, has taken on the title of a Sukuiya ("rescuer") trying to do her best to help grade-schooler, Akari."
(Source: Crunchyroll)