[@King Cosmos]
Between the information that appeared in the unknown language when the Demon King  gave you the choices—-which you can now understand—-and your own instinct, yes you can automatically know most things about your new forms. Unless you just feel like the narrative would be better for them if they had to figure it out. Up to you!

Your character is accepted, I’ll have to look at his backstory in more detail after work for your skill!

[@Rune_Alchemist]
It wasn’t too overboard, no worries! Longer posts are fine by me so long as they aren’t overly fluffed to the point one uses a thesaurus for every word.