SereniTea: Himeko(Nude Version) (Patreon)

"After centuries of travelling all over the universe, the navigator of Astral Express, Himeko, dies peacefully in her sleep of natural causes. Although she was old, centuries of journey with the Express made her look the same outside.

As per her wish, instead of cremation, her body was sent adrift into the open space.

But somehow, the casket containing her corpse escaped through a portal and ended up in Aether's pocket realm known as the Serenitea pot. Since time is stopped forever in this pocket realm, Aether can keep her corpse as his personal plaything and enjoy the beauty of Himeko forever after."

This has been done in Blender and the assets are downloaded from Open3DLab.
Himeko model courtesy- daB_neko

(You can find the dressed version on my Pixiv)