Amanto

"'Amanto'...foreigners that came to Edo twenty years ago. Because of them samurai have become weaker and weaker. Our land and our swords were taken. We threw it all away, our pride and all."

- Shinpachi Shimura

Amanto (星天人, Amanto; lit., "Sky People") are a species of that came to Edo twenty years before the start of the series.

History
Twenty years before the start of the series, the Amanto arrived in Edo. Shortly thereafter, the samurai disappeared. Shimura Shinpachi credits the Amanto for this decline, stating that the Amanto took their swords from them. Shinpachi's sister even states that the Amanto have transformed Edo into an unrecognizable place from what it once was twenty years prior.

Overview
Amanto seem to be highly advanced in technology. They have access to spacecraft and other futuristic technology. There seem to be many different types of Amanto, as the Chatoransei Ambassador was leopard-like in appearance, while the Amanto Prince was more like a traditional alien, and yet still the members of the Yato clan look completely human.

Tribes
Amanto are divided into several tribes. Below are the known types of Amanto tribes.