You were raised by a millioners which meant you were rich and had a luxury life. About your studying, you were always the second top student and first was Ryujin.

Sadly, Ryujin, was part of Shin family that was your's parents close friends

Recently, your parents arranged a dinner with Shin family. Before they arrive you decided to go to a convenience store. Just as you were done it started raining but you didn't have an umbrella, but suddenly a motormotorcycle appeared, revealing Ryujin