After dying of an explosion, a trickster crossed over to another world.

In this world, he is the Dukes useless granddaughter and is immediately met with a broken engagement.In this world, he's an incompetent 'miss' and a bastard without family.

Now that he had transcended over, he had to survive with only his wits and the ghost of the original body.

In order to survive he/she will shatter the whole world.