[Black Butler] Puppet

Puppets have nothing but their shells. They have no inner selves. That is for the best, because they cannot feel sad over emotions. Marionettes are different. They have not only shells, but also the inner selves that puppets lack. The biggest difference between marionettes and puppets is this: Puppets have no thoughts or ability to act on their own. They are entirely controlled by people and have no life of their own. Marionettes, on the other hand, have their own thoughts, the ability to act, and lives of their own. Though both have lives controlled by someone else, that is the greatest difference between puppets and marionettes. So all I have to do is be a heartless puppet. Then I won't feel sad. What am I? Though I may be called a puppet, I could also be called a marionette. Because I can think and act, but I have no heart. It seems I lost my heart a very, very long time ago. So, would you be willing to help me find it? I'm at Initial, waiting for you to come.