orangeqoon

The Yakuza Transferred to Another World Commits Villainous Deeds with Swords and Magic! Capturing female demon-kind and selling them to slave traders. Threatening adventurers who invade others' homes and extorting money. The Yakuza's way to survive in this otherworld was through their Yakuza business. Accumulating wealth, they buy and gather slaves to form a team and venture into the last...

"In this world where maid robots designed for intimate service wander in search of their masters, it was a desolate place where not only humans but even moving things were scarce. What she found a robot pursuing humans to kill. Two entities with opposing purposes journey together, and the humans they found in this devastated world are..."

In an elementary school in space, students are doing punishment cleaning and inadvertently destroying the world.

A schoolboy in space inadvertently destroys the world while cleaning it.