So all these EX chapters are just bonus content so feel free to skip them.

Avalon, the birthplace of all magic and the highway between the worlds. Presided over by Morgana le fae, the queen of the fae. She is all powerful and often believed to be the most powerful being in existence and she was chosen to meet with (y/c). Takes place between chapter 2 and chapter 3 while (y/c) is sleeping.