Chiyu gets Takumu to install Brain Burst for her and becomes a Burst Linker, gaining the Duel Avatar, Lime Bell. The next day as a new school year comes and Haru, Chiyu and Takumu are in the same class, Haru notices some odd behaviour from Kuroyukihime during assembly, believing there may be another Burst Linker among the new students. Whilst checking out to see if any new Burst Linkers are around, with no such luck, Haru and Taku help Chiyu get a grasp of Lime Bell's abilities, deducing that she's a healer type. As Haru reports this to Kuroyukihime, she explains that she is likely to be scouted, as the only other healer in Brain Burst is one of the Six Kings. Kuroyukihime then reveals she is going on a school trip to Okinawa, tasking Haru and the others with defending her territory. Later, as Takumu participates in a kendo tournament, Haru discovers that his opponent, a freshman named Seiji Nomi, is using some sort of Burst power, but doesn't appear to be a Burst Linker upon inspection.