The village of Baarle is situated in a corner of the Reste Kingdom, near the border. The protagonist Cactus used to be part of the ‘Izayoi Knights’, also known as the ‘Ears of the King’, but he left after a certain incident. He quickly turned into a useless person and roamed across the country until he arrived at Baarle. Now he serves as the self-proclaimed bodyguard for the town while avoiding his actual job of tending the fields. He keeps getting reprimanded by the village elder Nastur, but he has found himself a home thanks to the goodwill of the villagers.
One day, a beautiful pharmacist was dispatched to the town from the capital. He was surprised to find out that it was Peony, his imouto who he used to live with. Then came Coreo, the daughter of the head of the former thief guild, along with the mysterious ojou-sama Thistle and even the princess of the Reste kingdom, Zinnia. The peaceful town had turned suddenly into a very busy one.