Aria and Niche head to Houdai Franklin's house. Franklin attacks them upon meeting but Aria manages to convince him that she just wants to know the truth about the Day of Flicker. In flashback, Franklin was an engineer working on the airship with his friend Negich. The purpose of using the airship to travel to the artificial sun wasn't explained to the construction crew. A number of characters such as Dr. Thunderland Jr., a group of Bee triplets (with two of them serving as the gatekeeper between Bifrost and Yuusari in the present) were present aboard the ship. When Franklin wanted to steer the ship in order to get a clearer look at Akatsuki, the artificial sun gave out and flickered a few times. This momentary lapse in the sun's rays caused a huge disturbance among the crew, Franklin