Do you know what I mean ?

Okay so yesterday one of my fellow authors asked me why I didn't make an Original Character Story.
I thought over it and I really wanna make one since it sounds like lots of fun.
I've got the characters and what it's going to be about but I already have like 4 other stories and none of them are even near ending. I don't wanna end or delete any of the stories but I still don't know what to do.
What do you guys think that I should do ?
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The title was inspired by Panic ! At The Disco's " Nine in the afternoon "