Once upon a time, an unidentified enemy, the Unknown, suddenly appeared. The "Super Evolutionary Railway Development Agency," had developed the "Shinkalion," a robot that transforms into a bullet train, as a countermeasure against this threat.

"I want to be a cool person who can protect something..." Taisei Oonari, a second-year junior high school student, transfers to Shinkai Gakuen Middle School in search of clues about his older sister who disappeared two years ago.

Just then, the Unknown appears for the first time in 10 years. Taisei happens to have a high aptitude value as a Shinkalion pilot, and is forced to make a decision to fight it. What is the true nature of the Unknown and what is its purpose? What is the truth that comes to light at the end of the fight? The story of the boys' determination and growth begins now.

The Demon World once plunged the Human World into terror. With the seal broken and hordes of Demon Soldiers launching an invasion, five young warriors rushed to humanity's rescue. They were called the Samurai Troopers, and now their battle begins anew!

A gifted runner trains a determined but unskilled classmate, unaware he's creating a rival who will challenge him on the track for years to come.

When the intimidating Rintaro meets the open-minded Kaoruko, the unlikely duo grows closer. The issue? Their neighboring high schools hate each other.

Ruka is a young girl whose parents are separated and whose father works in an aquarium. When two boys, Umi and Sora, who were raised in the sea by dugongs, are brought to the aquarium, Ruka feels drawn to them and begins to realize that she has the same sort of supernatural connection to the ocean that they do. Umi and Sora's special power seems to be connected to strange events that have been occurring more and more frequently, such as the appearance of sea creatures far from their home territory and the disappearance of aquarium animals around the world. However, the exact nature of the boys' power and of the abnormal events is unknown, and Ruka gets drawn into investigating the mystery that surrounds her new friends.

As a member of a malevolent organization, the General is tasked with invading Earth and wiping out humanity. Even an extraterrestrial being like him, however, needs a chance to rest. Not even the Rangers—a team solely dedicated to defeating the General and his colleagues—will stand in the way of him visiting pandas at the zoo, buying ice cream at the convenience store, and enjoying his well-deserved day off from committing evil deeds.