A girl with an amazing mysterious expression on her faceA girl with an amazing mysterious expression on her face
Photo of a keyboard with one mysterious symbol in the form of a heartPhoto of a keyboard with one mysterious symbol in the form of a heart
Beautiful brown-haired woman with a mysterious lookBeautiful brown-haired woman with a mysterious look
Нечто неразгаданное, ещё не познанное. Нечто скрываемое от других, известное не всем, секрет.