The first time you sleep with Lucia it should happen automatically and the undress option should then be available after that
There is no "First time" with Lucia(it did not and after save still cannot undress, as stated).
Tell ya what, will delete the VN.
Attempt to wipe all data, to start a fresh clean slate.
Note: For me, Freya and Jade content is easy for me to avoid so it will be faster.
Their beautiful but no offence to anyone.
For me and me alone, not keen on viewing overweight-males having sex with beautiful females.
I CHEER them on with a GRATEFUL Heart but, don't wish to see it(not my cup of tea, per se).
Will report back soon as life allows and again, Thank You~