In 1995, Takakura Soichiro is a scientist who works on developing a robot. He is also on the verge of completing a plasma battery, following on the wishes of the deceased Matsushita. Matsushita was a friend of Takakura's late father and raise Takakura as his son.
Outside of work, Soichiro Takakura has peaceful days with his cat Pete, his girlfriend, Shiraishi san, and Riko the daughter of Matsushita. He is soon betrayed by his business partner and by his girlfriend, Takakura loses control of his company and the work he has done on the robot and plasma battery.
Takakura then opts to place himself into a "cold sleep" freezing machine, hoping to find a better future. When he wakes up, he discovers that he is in the year 2025.
Adapted from the novel "The Door into Summer" by Robert A. Heinlein.
Kenji Amo is a 2nd generation Japanese-American. He was born in America but went to school in Japan. He returned to America to study at UCLA. Now, Kenji Amo works as a reporter for a newspaper in the Little Tokyo area of Los Angeles.
Charlie Tamiya also studied at UCLA with Kenji Amo. Charlie Tamiya has feelings for Nagiko who works with Kenji Amo at the same newspaper company. Knowing that, Kenji Amo holds complicated feelings. At this time, Nagiko's friend Emi Hatanaka asks Kenji Amo to marry her. He accepts her proposal, but the Pacific War begins. Circumstances surrounding Kenji Amo changes.
A team of Touken Danshi, swords brought to life as a gang of talented but dysfunctional young men, travel back in time to stop an enemy force seeking to change history as we know it. Their mission: to ensure the events of Honno-ji proceed and Oda Nobunaga dies.
Based on the popular video game "Tōken Ranbu Online".