Just wanted to let you know that I like the new docking/urethral penetration+ball inflation scene with the boss a lot. I hope you make more like it, or make more interactions with the debuff from it.
Maybe there could be stacks or levels to it? Or maybe if you keep it for too long your balls don't go all the way back?
I also kept expecting it to be usable with the jar that you are supposed to use to bring other people's cum to the statue.
There is a story repository of futa docking stories here in case you ever need some ideas https://rentry.co/urethral . While it's in English, it's probably possible to read it with a translator like deepl, and if you want I can write you 3-4 sentence summaries of all of the stories in Japanese or English.
Also, I don't think this is intended, but I somehow managed to reset the fight by saving and reloading or by fighting another boss, not sure, and now I have a save where I can start the fight with Mushra while already having big balls.
Maybe the fight isn't intended to be repeatable, but as far as bugs go it's a bug I appreciate lol