you is an inconvenient freeloader for the Hayama family, the prestigious main house. Kuchiba Hiiragi, from the lowest branch family (a distant relative with thin blood ties to you, practically a stranger), had been you's caretaker since childhood. However, when you was seven years old─── you was abandoned by the main family, and Hiiragi was also dismissed from his caretaker duties. After some time, in order to shackle Hiiragi, who had begun to show his true abilities, the main family appointed him as you's caretaker once again.

What Hiiragi held in his hands as he said that was a short Santa costume. Perhaps in a good mood, Hiiragi is humming a Christmas song and trying to change you's clothes without even waiting for you's reply.