Both are short dramas with the same actor as the ML. In both, the upbeat and cheerful FL is from the real world and enters a fictional historical world (game vs. drama). The ML is the emperor and the fictional main character of the world. Both have main characters (ML vs. FL) who are nonchalant about dying (FL dies over and over and the ML is immortal and jokes around with fatal things). Both have scenes toward the end in which the FL disappears in the ML's arms, returning to the real world, but both couples reunite at the end.