As the gang go on a treasure hunt near Mount Fuji after Asuma finds a map in the History Club, they become curious as to whether or not Asuma actually has any romantic feelings for Kae. After encountering a group of bats, Kae becomes separated from the others alongside Asuma, who she discovers is afraid of the dark. As Kae helps him get through the darkness and reunite with the others, Asuma starts to realise his own feelings for her.