In Volume 16, after Maya announce Miyuki as her heir, she also announced the engagement of Tatsuya and Miyuki. This made Miyuki Tatsuya's fiancée. After hearing Miyu'ks confession of love, Tatsuya was surprise. Tatsuya quickly assured Miyuki that he would not push her away and that he did not consider her as someone abnormal while telling her that he would stay with her till death. Tatsuya then tell Miyuki that, currently, he only sees her as his little sister, but would try his best to love her as a woman, much to Miyuki's satisfaction.