It appears in the tags but the game description gives no such idea. So does it require some adult patch to have such content or said tag was only a joke/misunderstanding?

first, the game started off with Japanese as the main language (i think). after click through all the different choices I finally found the setting to change language. unfortunately, i could not get back to the main menu to start the game. i tried the esc key and the enter key but couldn't get back (it did have a game pad option to get back, but i didn't have a game pad available). it looked like an interesting game, but was unplayable...

sorry for my broken english.

Notice some day will be yellow color after completed , not sure why ? Anyone ?