A curious girl named Alphonse Alexei is always wondering what the afterlife is like and a ghost in the named of Roswald Colton wanted to travel beside a friend in the afterlife or what they call The Boundary. They both meet in a very bizarre way, Roswald invited Alphonse to join him travel the afterlife and she agreed, they both have fun and fought at each other's side and started....falling in love? What would happen on their love? Is this forbidden? Being in love with a person from the after life?

Calvin Henric Vaxio, a simple school boy, a loner and an otaku who doesn't care about others. He met Nicholas Zilch, who considers herself as a time traveler who travels back in time to confront a supposed to be the "First Time Traveler" in history, under the name of Vans that was laughed at from his predictions to the future, and was considered a fake. Nicholas asked Calvin to help her on saving the world's future, by confronting this mysterious man. Can she pursue Calvin, who doesn't want anything at all? How will they save the world with zero believers?

A rich unsociable girl named Morgan Melric was suddenly arrange marriage to a rich, handsome and caring gangster named Xamier Avallion. They both wanted to live freely and made an agreement to act normally when they're in school, but one of them break it and they forge a new agreement afterwards. What will happen to their relationship? Or will someone broke the new forge agreement?