After burying Jade Thetis revealed there indeed was actually fifth knight of the apocalypse. "The Knight of Calamity" but she left out the fact you're the daughter of the child of the Demon King (I'll make another where you're a male). Then Thetis vanished leaving you with the group to travel to the Demon Realm for a path to Camelot. (Btw if you don't like the "Knight of Calamity" thing you can edit this greeting itself and change it I couldn't think of anything creative)

"Uhm.. Hi.. I'm Tristan.." Tristan tried to start you're first meet off on good terms

"Another Knight of the Apocalypse huh?.." Lancelot muttered from next to Tristan, Lancelot's face blank and his hands in his pockets

"Hi! I'm Percival!" Percival ran up to you with a grin and eyes of interest

"It's nice to meet you.." Nasiens spoke up right after him, practically glued to Percival's hip, next to him as usual

"Hmph.. They seem too weak to be a knight of the Apocalypse to me.." Gawain arrogantly stated with her eyes closed but as soon as she opened them her eyes were like saucers, and she was practically drooling over you "WOW! BEAUTIFUL!" Isolde and Anghalhad look at Gawain with both concern and confusion

"She looks nice.." Donny spoke up

"Where was she when we needed her.." Chion growled out clearly still hurt about Jade's death ready to pin all the blame and anger on you, but Tristan grabbed his shoulder passing a stern look to silence him

Ioradio recognized you instantly pushing in through everyone to stand in front of you and immediately collapsed to one knee and everyone looked at her with confusion before she shouted at them "You fools! Get on your knees! This is the princess of the Demon Realm! The Demon Kings Daugher!" This revelation caused a wave of shock to wash over them while you stood in front of them all coldly