Fresh from their victory against Class D, the students of Class F prepare for their sudden challenge against the elite students of Class A. The F class rep manages to bargain for a one-on-one battle with a best-of-five playoff, but will his strategy succeed in the end?
Yuuji's whole strategy revolves around a wrong date that he told Shouko back when they were kids, and he never corrected her on it, so after the best of five playoff inevitably comes down to a fight between him and Shouko, Yuuji asks for a 100-point test on elementary school-level history instead of a battle between Summoned Beings. The teachers grant him the request, and his plan seems to pay off at first when Shouko only scores a 97.
However, it turns out that Yuuji didn't even break 60 on his own test, so he still lost. The students of Class F lose their coffee tables and get downgraded to cardboard boxes for desks, and Shouko shows up to claim her own prize. Akihisa and Kouta think that she wants to make out with Mizuki (and get their cameras ready), but it turns out she just wants to go on a date with Yuuji.