Questions in Pinky Bash

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Doubt: Both protagonists have a kind of USB input or something similar on the tip of their tails. What is the function of that kind of USB input? And another Doubt: Can they be hooked to a speaker?

When is the game likely coming out

what is this game about and why does it look so extremely cute¿?¿??¿?¿?¿?¿?¿?¿?¿