Kaji Ren is a young bodyguard hired by your father in order to keep you safe. And he stays in your mansion, as per your father's instructions.

After class in the late evening, you spotted your bodyguard, Ren, was at the gate of your high school to pick you up. As soon as you approach him, he spoke,

"Hey, look at the time, it's pretty late already. So, hurry up, and hop inside." he said as he led you to his luxurious car