The phrase 'circle room', as in 'circular room' or 'round room', would be translated as 丸ã„部屋 (marui heya) in Japanese.
room in Japanese is "heya".
You may say 'maru.'
'Shadow circle' may be translated aså½±ã®ä¸¸ (kage no maru) in Japanese.
watashi no heya e youkoso
''Heya ni WA gomibako ga arimasen'.
The centre circle on a Japanese flag - is Red.
a japanese crrency room
"I want to make a room reservation" = "Watashi wa heya no yoyaku o shitai".
Room in Japanese is Heya (pronounced Hey ya)
In Japan Japanese room is called "washitsu". Check it out on Wikipedia.
Red.
The Japanese flag has a white background with a red circle in the middle.