Ikumi Nakagami

Since she was very young, Kasumi Toyama has always been searching for the "Star Beat", a sparkling and exciting sound she heard while looking up at the night sky. Just after getting into high school, Kasumi comes across a "star-shaped guitar" in the storage area of an old pawn shop. Feeling a rush and excitement she has never felt before, Kasumi teams up with four other girls and embarks on a journey to seek out the shiny place. We promise to perform a live here!

One night right before summer vacation, Daichi Manatsu, a second-year in high school, sees a weird round rainbow floating in the sky above Tanegashima and ventures there alone. He has seen this rainbow before. With the memories of his father's mysterious death and an encounter of a mysterious boy and girl, Daiji arrives on the island while the alarm of a building labeled "Earth Engine" is going off. Someone asks him if he's a captain, just as robotic intruders from Uranus called "Kiltgang" arrive. The battle around the shining stars is about to begin.

The story centers around a college junior named Haruki Kitahara and his relationships with Setsuna Ogiso and Kazusa Touma in the light music club.

In this world, "Sensha-do", the military art of using tanks, is every bit as important to a yamato nadeshiko as flower arrangement and tea ceremony. Nishizumi Miho is a new transfer student who want nothing to do with Sensha-do. However, she is summoned before the Student Council President who forcibly enrolls her in Sensha-do, with the ultimate goal of being part of the school's team in the National Sensha-do Tournament. To make matters worse, every single member of the team is eccentric.