Butler cafe

Cosplay restaurants (コスプレ系飲食店, Kosupure-kei inshokuten) are theme restaurants and pubs that originated in Akihabara, Tokyo, Japan, around the year 1999. They include maid cafés (メイドカフェ, Meido kafe) and butlers café (執事喫茶, shitsuji kissa), where the service staff dress as elegant maids, or as butlers. Such restaurants and cafés have quickly become a staple of Japanese otaku culture. Compared with service at normal cafés, the service at cosplay cafés involves the creation of a rather different atmosphere. The staff treat the customers as masters and mistresses in a private home rather than merely as café customers.

The popularity of cosplay restaurants and maid cafes has spread to other regions in Japan, such as Osaka's Den Den Town as well as to places outside Japan, such as Hong Kong, Taiwan, Singapore, Mexico, Canada, and the Philippines.

In a standard maid cafe the female employees dress up as french maids (occasionally, the maids may wear rabbit or cat ears for extra cute appeal) and refer to the customers as either Master (ご主人様, goshujinsama) or Mistress (お嬢様, ojōsama). Upon entering one of such stores, the customer is greeted with the customary "Welcome home, Master" (お帰りなさいませ、ご主人様！, Okaerinasaimase, goshujinsama), offered a wipe towel and shown a food/drink menu. Popular dishes include cakes (sometimes baked by the maids themselves), ice-cream, omurice, spaghetti, as well as drinks such as Coca-Cola, tea, milk or alcoholic beverages such as beer or, in some cases, even champagne. Other options (of service) include taking polaroid pictures (either of the maid alone, together with another maid or with the customer, which are then decorated using colored markers or stickers), playing card, video games, and/or even slightly more unusual ones, such as being slapped by one or more of the maids. There exists a wide range of establishments catering to specific tastes and offering different services to customers.

...
Wikipedia