Manga by author Watase Yuu - Status ongoing

Every 30 years, a new princess is chosen from the Hime family to serve the Hayagami. The time has come again, but over these past years, records state not a single female has been born, save for one, the 15 year old Arata. The only problem is, Arata is actually a male! Forced to disguise himself and take the place of the princess candidate until a formal one can be found, he attends the festival only to witness the current princess, Kokuri-hime, murdered, and his own life is forfeit as well, by the hands of the princess' personal guard, the 12 Shinshou. As he runs for his life, Kannagi of the 12 convinces everyone that Arata is the one who has murdered the princess instead, and now everyone in the Imperial Court is after his head! We then switch over to Arata, a 15 year old schoolboy from modern Japan who has incredible athletic ability but is plagued by bullies. After the Arata from ancient times runs into a mysterious forest and the Arata from modern times runs into an alleyway, the two mysteriously take each others place.

From Viz: Miaka Yuuki is an ordinary junior-high student who is suddenly whisked away into the world of a book, The Universe Of The Four Gods. There she becomes the priestess of the god Suzaku, and is charged with finding all seven of her Celestial-Warrior protectors.

Description : From Viz: Rejected way too many times by good-looking (and unattainable) guys, shy Riiko Izawa goes online and signs up for a free trial of a mysterious Nightly Lover "figure." The very next day a cute naked guy is delivered to her door, and he wants to be her boyfriend! Has Riiko died and gone to heaven? The cute guy turns out to be sweet, smart, a great cook, and lots more. And he looks like a million bucks, which is what he going to cost Riiko if she doesnt return him in time... *Includes two other side stories in the last volume called: Ohoshisama ni wa Sasemasen! (I Wont Let You Become A Star!) - A special short story that was published in a freebie book put out in Sho-Comi. Sneaking into a boys school to exterminate ghosts! However, what is the boy Chima has always admired doing there...!? - ShoujoMagic Shounen Aromatic (Aromatic Boy) - Kabuki Takitsugu is a boy who has the family trait of smell. He can smell anyones fragrance and find their perfect match. One day, a mysterious girl named Hatsune appears before him, asking him to find a match for her. But, for some strange reason.. Hatsune doesnt have a scent.

From Nyan-Nyan Rampage:"The final arc of the story begins...When Takao Osugi receives the mysterious "Universe of the Four Gods" book from his mentor, Einosuke Okuda, he does everything to keep it away from his young daughter, Suzuno. But when disaster strikes Tokyo, can he still protect her from her fate?Shortly after the tragic finale of Genbu Kaiden, young Suzuno Osugi's tale as the Priestess of Byakko beings to unfold!"

When schoolgirl Takiko Okuda attempts to destroy her father's translation of The Universe of the Four Gods, she is instead literally sucked into the story, becoming the Priestess of Genbu in an epic journey to find the seven Celestial Warriors.