During the Taishou era's second year, Kuroki became head of a noble family at an early age. At a dinner party, he reconnected with his childhood friend, Arima. Despite rumors about him, Kuroki was drawn to Arima's carefree and playful nature. However, he knew that as the leader of a noble house, he couldn't let himself fall in love wherever he pleased. He tried to suppress his growing feelings for Arima but couldn't completely cut ties with her.