Status Updates From Don't Stop Now! Level 1 (Ca...

This book is ranked a thriller,but I don't think so. I think it's a romantic. The male character worked in a web cafe and he fell in love with his boss's daughter. He found a secret--a black box was connected to the cashier. Some people wanted to use it to get foreign tourists' credit cards' numbers. When the cafe's owner didn't want to work with them. They kidnapped his daughter. The male character saved her.