MY TUTOR IS A KAMEN RIDER!? (kamen rider build x quintessential quintuplets)

10 years ago, the Pandora Box was discovered on the planet Mars and brought forth a catastrophe that would forever change the country of Japan. In the years following the Sky Wall Disaster, the rising of the Sky Wall divided the country into three warring territories: Touto (Eastern Capital), Hokuto (Northern Capital) and Seito (Western Capital), and created a series of unidentified monsters known as Smash that relentlessly attack the public but when they all think that hope was lot a masked hero appeared to prevent the city from danger!