Following a time paradox issue, time travel is outlawed in the year 30. To keep an eye out for and suppress time crimes, the Time Protection Department was founded. Don Dolnero and his crew con four new TPD recruit cadets into allowing them to time travel to the 20th century so they can perform different crimes there. The four cadets go after them in order to preserve history. There, they run into a serious issue: the first operation of the Timeranger program calls for six participants. Thus, they force Tatsuya Asami, a modern-day martial artist, and Tsukasa Asami, a playful playboy, to join them, enabling them to become the Timerangers. After that, Tatsuya and Tsukasa rents a residence for them, and in order to make ends meet, they launch a side venture called Tomorrow Research. The four cadets eventually come to understand that their presence will fundamentally alter the future by creating the City Guardians, a security team employed by the Asami Corporation to defend the city from the Londerz. >Also Posted on AO3< Book 1 of ??? in the Extra Ranger Series

A princess seeking people with the "shining spirit" known as Kiramental-a source of exceptional charm and talent-comes to Earth from a kingdom of jewelry and Kiramai Stones. She looks for them in order to train them as warriors who can protect Earth from an evil army. The Kiramai Stones, which change into the sentient Mashin vehicle companions, choose six. They battle the wicked army determined to deprive people of their hope and brilliance by using their powers. > Also Posted on AO3 < Book 2 of ??? in the Extra Ranger Series