There are also numerous themed cafes which flourish in Akihabara. These are similar to the maid cafes, but allow and encourage visitors to enjoy kosupure or costume play just like the waitresses in maid costumes. The waitresses even address customers as "master". For an extra fee, customers could even have the maid/waitress sing them a song. There are other shops as well that allow role-playing like this which enable otaku to have the ability to imitate the manga and anime characters that they adore.