Sunset first met Nina over an Eris server, who invited her to record with her. Later on, Nina introduced Sunset to Joy and Trigger, and the four girls came together as a collab group, recording and streaming games ever since.
Joy Stick (Channel name: JoyOfGaming)
You could look at it that way.
I meant it as a reference to this YouTuber/streamer named Jpw03, who Nina is supposed to draw parallels to.