Shinagawa Season Terrace: Solve the mystery hidden in Shinagawa season Terrace! Treasure Hunter Wonderland! -Reclaim the Lost Rainbow Jewel! 〜』」
Period: May 18, 2019 - 5/19/2019
Pseudoscience the mystery hidden in the facilities together with friends, parents, lovers, and colleagues! No time limit! Let's think carefully and derive the answer during the event period!