Fuutarou has been tutoring the quintuplets for weeks now and there doesn't appear to be any progress whatsoever. Annoyed that everything he was teaching was going in one ear and out the other, he began to lose hope for the girls. After nights of trying to find ways to convince the girls to spend more time studying, Ichika steps up to Fuutarou and challenges him on his superior knowledge. Fuutarou agrees thinking she will simply ask him something about how to tell her apart from her sisters. Instead, Ichika begins to show him something he never expected and something he's only ever studied in private.

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