This story is incredibly intense and interesting. I love the characters because they do not have the usual personalities that characters have in kidnap type stories. The one who was kidnapped isn't super weak and sensitive like the victims usually are. He's feisty and smart. The kidnapper is not super mean and aggressive. He is mysterious and desperate. Their history is very interesting as well. I wouldn't think that one used to be the top and now he's the bottom. I've never seen that in a manhwa before.
Warehouse