Sylvette allows Lag to live in Gauche's room for rent. Aria arrives at Sylvette's house to take Lag out to ask about his background. Aria brings Lag and Niche to the Hill of Prayer, where the artificial sun at Akatsuki shines very brightly on there. She tells Lag about the Day of Flicker, when a government airship which was used to make adjustments to the sun crashed into the vicinity. Before the crash, the light from the sun went out briefly and flickered back on. This caused Gauche to lose part of his heart and forget about his mother, who just died from giving birth to Sylvette. He began to focus all his thoughts to taking care of his sister. Lag tells Aria that he was born on the Day of Flicker just like Sylvette. He and Niche leave Aria and go to help Zazie and Connor repel multiple Gaichuu attacks. After the battle, all three Letter Bees sit down for lunch and drink Sylvette's soup, which causes them to know how horrible the taste is.