This is of course a great opportunity to hear singer/voice actress Sakura Tange (best known as the voice of Cardcaptor Sakura) as the busty emperor/artist.
She was “Playable Saber” from her Fate/Extra days, before Fate/Grand Order, when there were a lot fewer Sabers and a lot fewer characters with Saberface.
She’s the Heroic Spirit Nero Claudius Caesar Augustus Germanicus, and she’s representing the new action game Fate/Extella in its crossover with smartphone RPG Logres of Swords and Sorcery.