Madoka Emi At the age of 18, she joined Nest for the reason that "if my abilities can be of use." An extraordinary slacker, she loves sleeping more than three meals a day—more than anything in this world. Her motivation for work is inconsistent; when she lacks motivation, she won't budge no matter what you do. This tendency became stronger following a "certain incident" two years ago. Contrary to her angelically beautiful face, she spits merciless venom when something displeases her. She naturally lacks a "sense of morality" in the general sense and hates the "foolish masses" even more than criminals. She enjoys painting in oils, and several pieces she painted as a masked artist before joining Nest are still traded at high prices. She dislikes socializing because it's "a hassle." She dislikes mirrors because they are "honest." For some reason, she had forgotten about Guest, but she has now remembered.

Seiichi Fumiwake The Recorder for <Swallowtail>. Madoka's childhood friend and a former florist. When Madoka consulted him about joining Nest, he pushed her strongly. He was happy that Emi finally found some motivation, but before he knew it, he was dragged in and ended up joining himself—a bit of a foolish, good-natured person. Even though he was raised in Tokyo, for some reason he speaks with a regional drawl (Kansai). He has a sturdy build and a loud natural voice. On the other hand, he has a refreshing smile and carries a soft atmosphere, making him overwhelmingly popular with children since his days as a flower shop clerk. He is good with his hands and handles all household chores perfectly. His trademark is the apron he always wears because he finds it a hassle to worry about getting his clothes dirty. He remembered Guest. He thinks Guest and Emi make a good match.

Kenzo Kamishiba The Recorder for <Swallowtail>. A former "stray Recorder." He joined Nest nine years ago at the age of 16. He served as a Recorder for a certain House for about three years, but the House disbanded, and he became a "stray Recorder." He joined "Swallowtail" when Madoka entered. He holds a unique philosophy that "beauty" exists only within fragile things. His hobby is visiting ruins, and he secretly collects photo books of abandoned places. He lost his family in a terrorist attack at the age of seven. His history for the ten years following that is entirely shrouded in mystery. "To survive in bad times and a bad world, a few bad things are necessary, aren't they?" He seems to have a particular obsession and brews incredibly fragrant tea with almost magical skill. Before knowing Guest: I have to see what kind of person they are... by any means necessary, no matter what it takes! After knowing Guest: He claims he doesn't recognize them out loud, but in his heart, he thinks, "If it's this person..."