I would financially support it.
The genre is really small and it's rare to get something good that is likely to be finished.
But I'd say: Don't expect huge financial success quickly.
I think for a side project like this, you have to be fine with it being satisfying to do and to see the money you might get more as a compliment to your art than as a serious income.
Don't build up negativity in yourself through huge expectations.
Do it in a way that is fun to do for you.
Let your perfectionism out in some stories.
Get some feedback when you are satisfied and need a new direction. Not when you are half-done and demotivated.
And take a break if necessary.
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