A witch who ventures into another world without permission is a fool with no self-awareness and must be dealt with sternly.
A witch who takes control of a local power in another world and establishes a puppet regime is rash, but still a reckless youngster with some redeeming qualities.
A witch who builds and commands a skyfaring vessel, allowing her to travel the cosmic seas and influence multiple worlds, is a rising star who has achieved a measure of success.
One who builds a complete dimensional fleet and extends her influence to the Empire's home territory is a pillar of the wizarding class.
And if this esteemed witch gains the power to write an apocalypse capable of destroying an entire world in an instant, then she is an important force for maintaining peace throughout the worlds and the void seas.
If this needs a synopsis, then it's the story of a transmigrator who ends up in an alternate Western Roman world of high magic and advanced technology. She wants to laze around with pretty young ladies, but the world forces her to become an important force for maintaining peace throughout the void seas.
It's all the world's fault, really. I'm not making this up!