The SOS Brigade follow up on the eight people who went missing due to the strange data entity from Mystérique Sign. One of the victims is Kyon's grandmother. Kyon (and his sister) went to visit his grandparents, ostensibly as a family trip, but in Kyon's case, it was a rescue mission. While there Kyon had to use advice from Itsuki Koizumi and Yuki Nagato to rescue his grandmother. Nagato gave him her glasses, which she had modified into a trap to destroy the creature. Kyon's grandmother returned to existence, having thought she had merely fallen asleep.