Ep. 1: Takeshi and Michi encounter the Weiß Schwarz card game during a school study session.

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Takeshi and Michi remain at their school overnight to focus on their studies. While studying, Takeshi picks up a card, prompting Michi to explain that it belongs to a game called Weiß Schwarz. She mentions that she has won numerous tournaments involving this specific game. The situation takes a sudden turn when Michi is unexpectedly sucked into a portal. This event marks a dramatic shift from their quiet study session, introducing an element of fantasy and danger to their otherwise mundane academic evening. The narrative focuses on the immediate aftermath of Michi's disappearance and the introduction of the card game's mechanics.