Canadian design studio Frank Architecture has designed the Lonely Mouth Bar, a Japanese restaurant in Calgary. The Bar is located at the eastern end of Calgary's 17th Avenue commercial strip, just blocks from Frank Architecture's studio in the city. Inspired by Japanese minimalism, the studio adopted a 'less is more' approach inside, with wooden panels, low lighting and corduroy upholstered chairs creating a cosy atmosphere.

The name Lonely Mouth bar and restaurant is derived from the Japanese word Kuchisabishii, which means "you eat when you are not hungry because your Mouth is Lonely". Lonely Mouth is a place where tradition meets innovation, and when it comes to interiors, the designers chose warm tones of green and brown, as well as textured plaster and soft upholsters to create an intimate atmosphere.

Wooden dowel screens separate the bar from the dining space, adding intimacy. While providing a carefree and interactive dining experience, the restaurant's noodle chefs can be seen working in the bar area, allowing guests to see how their food is prepared. A shelf behind the bar displays the sake collection, using wood recovered during the renovation of the space.

In the central dining area, diners can sit in brown velvet corduroy chairs, while other seats are decorated with green fabric. Three spherical paper chandeliers cast a dim light throughout the dining room, along with spotlights, streamer lamps and candles to create an atmosphere. Light levels are dimmed to provide diners with soft, even bright light.