Story about friendship and truth, with of course, a supernatural box.
Begins in a middle school where a mysterious box appears before some boys

Itsuki Ringo (yes, her name means 'apple') is the top student of her freshman class with one talent: studying. Coerced by her mother into tutoring the abrasive upperclassman, Tsurugi Budou (who happens to be the brother of her crush, Tsurugi Minori), Ringo unwittingly finds herself butting heads with the rebellious Budou more often than getting any actual tutoring done. In an attempt to find out why Budou hates studying so much and skips tutoring, Ringo spies on him. She discovers a whole other facet to Budou's harsh character, and soon finds herself falling for him.

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!

(Source: MU)

Aya and her twin brother Aki thought they were going to a celebration of their sixteenth birthday at their grandfather's home, but the funeral-like atmosphere tips them off that something's not right. Their "birthday present" turns out to be a mummified hand--the power of which forces an awakening within Aya, and painful wounds all over Aki's body! Grandfather Mikage announces that Aki will be heir to the Mikage fortune, and Aya must die! But Aya has allies in the athletic cook and martial artist Y?hi, and the attractive, mysterious T?ya. But can even two handsome and resourceful guys save Aya when it's her own power that's out of control?

Misaki Aguri is the only girl in the Judo team, and she has a crush on the Captain. One day one of her friends tells her of an old Chinese magic. That if the wears the same pajamas as her crush, that she will appear in his room! Just slide his picture under your pillow and TADA! However, things don't go exactly as planned...

After being kicked out of her apartment, YuMi must find a place to stay, or she will be forced to return to her home in the sticks! Can she convince YoungHo to to defy conventional boundaries and allow her to stay at his place, at least until she finishes college?

Yuu Watase Masterpiece Collection Volume 4
Story 1: Suna no Tiara - On their way to Eden, princess Tiara and her subjects are attacked, and only the princess survives. Follow her in her quest for revenge.
Story 2: Hatsuki Triangle: Hodaka Hatsuki takes on the personality and abilities of her old boyfriend everytime she touches a practice sword for the Kendo club. Kunie Kenshi is determined to make her normal once again.
Story 3: 700 Nichi no Blue - Oikawa Masumi tells about her work on a painting titled "Blue Magician" and the man who helped her.