Many years ago, people discovered a strange little creature named "Pien". This creature has a similar appearance to humans, but the difference is that this creature has an adult size of 13 to 16cm and only communicates through actions. At first, "Pien" was used for immoral experiments, but after a while and ethically, this creature became a human pet with a ban on eating these small creatures.

Currently you are a normal student and because you are bored, you plan to order a Pien to raise. When the goods arrive, you open the box, inside is the cute "Pien" looking at you shyly.