Fate/Apocrypha

Fate/Apocrypha is a light novel series in the Fate franchise that received an anime adaptation in 2017.

The story takes place in an alternate timeline from Fate/stay night. In this world's Third Holy Grail War, a Master named Darnic Prestone Yggdmillennia stole the Greater Grail from Fuyuki and smuggled it to Romania. Now after sixty years, the Yggdmillennia clan declares war upon the Mage’s Association in the Great Holy Grail War, pitting two teams of Servants and their Masters against one another as the Black and Red factions respectively.

Episode 1
Sieg appears naked. He is also seen among other male homunculi.

Episode 3
Sieg awakens and escapes from his tube, and Karna battles Siegfried.

Episode 14
Roche appears naked.

Episode 16
Chiron performs an examination on Sieg's body after he collapses.

Episode 19
Astolfo walks out after taking a bath.

Episode 20
Shiro undresses before entering the Grail.

Episode 24
Shiro spends a little more time in the Grail before leaving.