Ép. 1: Mitsuha Yamano découvre les voyages interdimensionnels après avoir survécu à une chute et retourne au Japon pour chasser les loups.

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Mitsuha Yamano loses her parents and brother in an accident. She gets in a fight with bullies and is pushed off a cliff, but lands safely and realizes she has traveled to an alternate world. By visualizing what her otaku brother might have done, she wanders until she is found and taken in by a girl named Collette, and decides to get used to this new world. While foraging, she and Collette are attacked by wolves, only for Mitsuha to abruptly return to Japan. Realizing she can travel between worlds, she grabs several weapons, travels back and kills the wolves. She is confronted by an interdimensional being who explains that when she fell off the cliff, her strong will to live stole some of his power so she can now travel between worlds and heal all injuries. He lets her keep the power and leaves, promising to visit in a few millennia. Collette's father pays Mitsuha gold for the wolf carcasses, and Mitsuha realizes she could use her power to become wealthy enough to retire in both worlds. She thus makes it her goal to amass a fortune of 2 billion Yen, roughly 80,000 gold coins. (Source: Wikipedia)