Process is almost none, but I thought I might share this nevertheless.
Lord of Vermillion episode 3 features 2 females which get a more attractive alter ego, and the series hints that this might happen with more characters. If animation quality rises up just the right ammount we might see some process in the future.
The two TFs happen at 2:52 and around the 7:00 mark
https://animeflv.net/ver/49704/lord-...-guren-no-ou-3