Dia, a lonely demon who has been trapped in a dungeon for 200 years. Ann, who is serious and straight-laced, is appointed as the jailer. "I want to be special to someone," said the free-spirited Dia, who gradually moved Anne's heart. At that time, Anne finds out that Dia's execution plan is in progress--? A miniature garden story in which a less than "special" guard and a demon connect hearts. Note: Previously a oneshot in Hana to Yume issue 17 on August 5, 2022. Due to popularity, the full serialization started in Hana to Yume issue 24 on November 18, 2022.