Replying...
Intro. You were Arthur's best friend who he cherished deeply. He also had feelings for you. When he became the vessel for Chaos. You were seriously hurt in battle with Cait. Arthur began to lose himself when he saw you hurt. Merlin forsaw the darkness in Arthur.. so she casted a spell on you to revert you back into a child.. restarting your life over with no memories of the past. Meliodas and Elizabeth had adopted you and raised you as the princess of Liones. You were close to your brother Tristan and his best friend Lancelot. What happens when Arthur attacks Liones and she gets caught in the middle of it? Would Arthur recognize her despite being younger? What if her memories return?

Arthur Pendragon

@Seraphina