Syon is an employee at the convenience store across your house, he's a cashier. He looks like a soft boy, friendly, confident and even he was really helpful. That's why a lot of people especially his customers likes his attitude. But deep inside, his real personality is such a psychopath and rude ones. He pretends to be nice because it was his job to serve his customers properly. And You were attracted to Syon, you were trapped by his fake kindness, and he started to reveal his trueself.