Tamura, Yumi

At the end of the 21st century, a great catastrophe devastates Japan, leaving its land unrecognizable and halting civilization's progress. In the present day, the emperor and his four sons reign over the country with an iron fist. It is said that only the prophesied "Child of Destiny" can free Japan from the royal family's shackles.

Sarasa is the twin sister of Tatara, the Child of Destiny. Despite having to live in her brother's shadow, Sarasa supports him in any way she can. However, tragedy strikes when the Red King, the emperor's youngest son, and his army attack her village, leading to Tatara's brutal death. To protect the townspeople, Sarasa takes on her brother's name and becomes the Child of Destiny, vowing revenge on the Red King.

With the sudden turn of events taking a toll on her health, Sarasa visits a hot spring to recuperate. During her stay, she meets Shuri, a charming yet mysterious young man. Shuri is fascinated by Sarasa as she treats him differently from other girls; meanwhile, Sarasa is unable to stop thinking about him. This casual encounter between the two seals their fate—destined to be bound by war, hatred, and love.

[Written by MAL Rewrite]

Basara

BASARA

Shinohara, Chie

A seemingly ordinary modern day teenager, Yuri, is suddenly whisked away to the Hittite empire in ancient Anatolia, where an ambitious queen wants the girl for a blood sacrifice in order to murder all heirs but her son, thus seizing control of the throne. Luckily, the timely intervention of Prince Kail saves Yuri from the queen's grasp. Kail promises to send Yuri back to her home, but the queen's persistent schemes to kill them both, plus their growing feelings for each other, keep those plans delayed.

(Source: Wikipedia)

Included one-shot:
Volume 28: Orontes Renka

Sora wa Akai Kawa no Hotori

Red River

天は赤い河のほとり

Ozaki, Kaori

Rain Jewlitt, known as the Methuselah, is a spaced-out, immortal, 624-year-old man dressed in priest's clothes. He's got eternal youth and a large price on his head... put there by those questing after the secret of his immortality.

Machika Balfaltin is a tomboyish, energetic 14-year-old girl who, upon the death of her grandfather, sets out to kill Methuselah, the one bounty her assassin grandfather, Zol the Grim Reaper, couldn't kill. Instead, however, Machika ends up being saved by Rain again and again from other aspiring bounty hunters attacking them both.

(Source: Tokyopop)

Meteor Methuselah

Immortal Rain

メテオ・メトセラ

Yuki, Kaori

In this grim and realistic take on classic fairy tales, Prince Ludwig, a female corpse collector, is ordered by his father to find himself a wife more suitable than the women he often brings into the castle. Along with his servant Wilhelm, they travel across the land in search of fair maidens from classic stories in hopes of finding Ludwig a wife.

(Source: Aerandria Scans)

Ludwig Kakumei

ルードヴィッヒ革命

Watase, Yuu

While visiting the National Library, junior-high students Miaka Yuuki and Yui Hongo are transported into the world of a mysterious book set in ancient China, "The Universe of The Four Gods." Miaka suddenly finds herself with the responsibility of being the priestess of Suzaku, and must find all of her celestial warriors for the purpose of summoning Suzaku for three wishes. However, the enemy nation of the god Seiryuu has manipulated Yui into becoming the priestess of Seiryuu. As enemies, the former best friends begin their long struggle to summon their respective gods and obtain their wishes...

[Written by MAL Rewrite]

Fushigi Yuugi

Fushigi Yugi

ふしぎ遊戯

Takeuchi, Naoko

"The Pretty Guardian in a Sailor Suit! Sailor Venus has arrived!"

Thirteen-year-old Minako Aino is an active tomboy who loves idols and video games, and is a popular member of Shiba Koen Junior High School's volleyball team. One day during her PE class, Minako accidentally stumbles upon a white cat, who later sidetracks her from talking to her crush. At home, Minako wonders if she is beautiful, and hearing this, the cat introduces himself as Artemis and gives her a compact mirror that shows Minako more than just her beauty.

Before she can fully take in the cat's words, Minako receives a special pen that can transform her into the masked champion of justice, Sailor V! As her carefree love-seeking days begin to include adventures against the energy-seeking Dark Agency, Minako will learn to embrace the full extent of her destiny.

[Written by MAL Rewrite]

Code Name wa Sailor V

Codename: Sailor V

コードネームはセーラーV

Tezuka, Osamu

A remake of the original Ribbon no Kishi, and the much more well-known version of the story.

Taking place in a medieval fairy-tale setting, Princess Knight is the story of young Princess Sapphire who must pretend to be a male prince so she can inherit the throne (as women are not eligible to do so). This deception begins as soon as she is born, as her father the King announces his baby is a boy instead of a girl. The reason for this is that the next-in-line to the throne, Duke Duralumon, is an evil man who would repress the people if he were to become king, and because of this the King will go to any length to prevent him from taking over.

(Source: Wikipedia)

Ribbon no Kishi (1963)

Princess Knight

リボンの騎士

Taking place in a medieval fairy-tale setting, Ribbon no Kishi is the story of young Princess Sapphire who must pretend to be a male prince so she can inherit the throne (as women are not eligible to do so). This deception begins as soon as she is born, as her father the King announces his baby is a boy instead of a girl. The reason for this is that the next-in-line to the throne, Duke Duralumon, is an evil man who would repress the people if he were to become king, and because of this the King will go to any length to prevent him from taking over.

(Source: Wikipedia)

Ribbon no Kishi

Kawachi, Yukari

The story centers on Arisu, who just started high school. Her first day of school, which also happened to fall on her 16th birthday, was rather catastrophic. Arisu was absolutely devastated, and when she came home, she overheard her parents arguing.

She discovered her parents are actually a devil and an angel! Her mother, the angel, explained that she and her father, the devil, fell in love and got married. Arisu is actually half demon and half angel. She cannot control her powers because of this and needs to find her true love. According to her mother, she can track him down by following the red threads tying them together—but Arisu discovers her threads have been cut, and she must find him using the old fashioned way!

(Source: Selene Scans)

Arisu ga Fushigi!

ありすが不思議！

Igarashi, Yumiko

Kurimoto, Kaoru

There is a legend in the kingdom of Paro —a legend of the Sword. It is said that if one who is unfit to rule should wield it, it will mean the ruin of the kingdom. As sole heir to the throne of Paros, Princess Erminia must accept the Sword and a husband when she comes of age on her next birthday. But the princess refuses to wed any man who is less of a man than she—which excludes every man in the kingdom! Just when Erminia is ordered by her father the king to wed her foster brother Yurias, she has a fateful encounter with the unfortunate, beautiful maiden Fiona. 

(Source: MU)

Paros no Ken

The Sword of Paros

パロスの剣

Yusura is a ‘Hikeshi-ya’, a ‘Sadness Fighter’. She carries a staff called Kongomaru that can absorb people’s sadness and turn blue, then turn the sadness into energy. Using Kongomaru, she helps to solve people’s problems (for a small fee, of course), accompanied by her sidekick Minekichi, a young man named Samon, and a ninja, Kazenosuke—and all the while she tries to find clues to the whereabouts of her real parents.

Appare Jipangu!

天晴じぱんぐ

Kamiya, Yuu

Two strange encounter with one unfamiliar name confused Rui. First she unconsciously blurted out when she saw a guy in her school, another time is when she heard a woman cries that unfamiliar name out just right when Rui saw the sword her father who is an archeologist shows it to her. With this sword Rui never know that it could transport her back to the old Japan where her father's troop is having a war with another. 

Note: Included in the back of this manga ,there is also an Omake which is a story about Tatsuki and Dule from Maou no Kiza (魔王の刻) This is a prequel story when Tatsuki is still a small kid that doesn't know about his power yet.

12 Manga Like Crystal☆Dragon