Episode Title:
Memory Days.
Episode Description:
While cleaning the guild's storage, Natsu has a traumatic memory of an event in which he received the scar on his neck. This activates a magical book called Memory Days, which transports Natsu and his friends back six years in time to the day from Natsu's memory. Ignoring Erza's warnings to not interact with anything while she decodes the book for a way back to the present, Natsu and Gray go off exploring in disguises. While following them, Lucy stops a runaway carriage that carries her own younger self, who notices the emblem on her present self's hand and becomes inspired to join the guild. Meanwhile, Natsu and Gray spot their younger selves fighting before getting into a brawl themselves. When the younger Natsu loses to Gray, he is attacked by his bruised and unrecognizable present self, who inadvertently causes his own childhood trauma as the younger Natsu scratches his own neck while trying to fight back. Upon discovering that only Natsu will return to the present, his friends race to reach him in time and successfully return with him, leaving the book behind in the past to be picked up and stored away by Makarov.
