Even Though I Am a Playboy, I Can Become an Emperor Through Simulation.

The protagonist is reborn in an old mansion and becomes the young master of the mansion. His parents were nobles and gave up their status to engage in business. Unexpectedly, after the black box simulator appeared, he realized that his family's existence did not seem simple. The mighty and domineering father, the extremely contrasting brothers, the double-faced empress? What? The life I simulated turned out to be my multiverse self. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.