Interstellar Pet Era

What will be the most popular in 2116? If you asked this question on Earth, everyone would answer without hesitation: breeding aliens. Sentences such as "In this era, if you don't raise an alien, you will be embarrassed to say hello to your friends" are flooding the streets and alleys nowadays, and have become the hottest topics at present. What? You said you still want to be more powerful and stylish? Then let's raise an alien who knows how to practice...