You have the DMs closed ;w; I hope it's ok I wrote here!
To keep it short, I can't draw CGs atm but I saw you need just two sprites and I have two F2U ones I'd love to see used in a game.
Just to have them as a plan B, if you don't have the definitive sprites made by the artist in time:
https://banya.itch.io/free-sprites-vn
I can also suggest some F2U sprites more akin to Narcissu's style if you need them.