三千代への抑えがたい愛を自覚し、自分の心に嘘をついて生きられないと確信したから

Meanwhile, Daisuke's father, Toku, refusing to tolerate his idle lifestyle, pushed hard to arrange a marriage with a prestigious family. To Daisuke, his father's command, which prioritized family lineage and social status, was equivalent to selling his own soul. Rejecting the marriage proposal meant that his financial support from home would be cut off. However, having realized his uncontrollable love for Michiyo, Daisuke came to the firm conviction that he could no longer live falsely to his own heart.