After returning to his room, Juugo and Nanana realize the box contains a blue jewel called the Light-Up Lie Detector, one of Nanana's Collection. Elsewhere, the members of the Matsuri group Yukihime and Shu bicker over their heist failure as the jewel can't be found. The next morning, a young detective by the name Tensai investigates the scene of the crime with her assistant Daraku and confronts her prime suspect, Juugo, in his room. Tensai consulted convenience store security footage and even secretly unlocked Juugo's phone in her investigation...