Hiromichi Satou has been single his whole life, but, he recently got a girlfriend named Saikawa Haruka, and they have been dating for a month. His father remarries, and he gets a new step-sister Saikawa Shigure, the identical twin of Haruka.

Sato and Shigure agree to keep their step-sibling relationship a secret from everyone, and Haruka. How will the story unfold?

Tokonatsu Taichi took the summer Koshien by the storm as a sensational ace pitcher, with a full arsenal of pitches including a 98 mph fastball. But on the way home from the game, the team bus suffered a tragic accident and Tokonatsu Taichi lost his life... Only to be transported to a new world where all international conflicts are resolved by a game of baseball. Unfortunately, the country he landed in was the weakest, and had seen gradual loss of its resources and people to neighboring countries. Can Taichi turn their fortunes around?

7 high school students that got caught in an airplane accident wake up, in a middle age like fantasy different world where magic and beast-man (juujin) exist.

But they do not panic at their current situation!?

They build a nuclear plant in a world without electricity, they control the economy of a large city in a short work's trip, and finally for their benefactor's sake who are suffering from the misgoverment, they declare war on the evil nobles.

So... none of them is a normal high school student, each of them are super human high school students that stand at the top of politics, economics, science and medicine!

There are some humans capable of using magical power to manifest their souls as weapons and control forces beyond normal comprehension. These people are known as Blazers, and those who are recognized as such can undergo training at academies to become Mage-Knights. Ikki Kurogane is an aspiring Mage-Knight, despite being considered the worst student at Hagun Academy as an F-ranked Blazer—the lowest rank possible.

One morning, he accidentally stumbles upon Stella Vermillion, a visiting princess and A-ranked Blazer who has just enrolled at Hagun, in a state of undress. As a result, she challenges him to a duel where the loser will be the winner’s slave. It seems like a surefire win for Stella, but could there be more to Ikki than meets the eye?

When humanity was threatened 5 years ago, the boy who saved the world was driven to despair and became regarded as the enemy of all of mankind. And now a new crisis approaches humanity. The curtain rises on a gallant drama about a hero falsely charged.