OC x COTE

Saeran choi is a spy from the year 2137, a technology company called ASTA Aka Advanced scientific technology Admission has created a time traveling device that can be used infinitely with energy that be regenerated when the sun shines the device, and Soundwave which is his spy name has been assigned by the company to transport the device in a classified facility for further testing and of course the bracelet accidentally gets connected to him and travels to the past in the year 2015 where he joins a school from Tokyo called ANHS. But duo to him not being able to experience a regular life, he decides to stay and see what it's like to live a life as a student.