At Tachiyama International High School, one student is the son of the researcher who brings together the leaders of every country in the world, and another is Yukina Tokisada, the daughter of the head researcher.

Summer, 2016.

A lone samurai awakens for the second time.

Kennosuke Tokisada Ouma

Voice Actor: Youhei Azakami

A man whose real identity is unknown, and speaks like a samurai. It seems that for some reason he knows Yukina’s face from somewhere.

Yukina Shirahane

Voice Actor: M.A.O (Mao Ichimichi)

A second year at Tachiyama International High School. Unlike her extremely hectic mother, a head researcher, she has a pretty laidback personality. Slightly obsessed with geography, she talks about river terraces with a triumphant expression.

Sophie Noel

Voice Actor: Reina Ueda

An exchange student from France. Believes in samurai and despite her small frame is a Judo fighter. She’s a genius when it comes to piloting robots, and is a test pilot at the research facility.

Mika Ogino

Voice Actor: Asami Seto

Yukina’s childhood friend and classmate. A self-proclaimed ‘late bloomer’. Her hobby is cosplaying characters.

Ryouto Akagi

Voice Actor: Kaito Ishikawa

Yukina’s classmate. His father is the maintenance department head at the research facility.