Gan'an Shinomiya

Kaguya's father. He is the head of the Shinomiya Group, one of the four major financial conglomerates, and resides in the main residence in Kyoto. His relationship with Kaguya has grown cold, and he is disliked by Hayasaka, who inwardly refers to him as "old bastard."

The Shinomiya Group was held together by his charisma, but in chapter 241, he is shown hospitalized with only a few weeks to live, unable to distinguish his own sons. The Shijo Group saw this as an opportunity and placed the Shinomiya Group on the brink of collapse.

He would often mistake Kaguya for Nayatake, who had died long ago, and harbored doubts about whether Kaguya was truly his daughter. He was too afraid to confirm the truth, unsure of how to connect with her. He then reveals his intention to entrust the company to her someday, stating that even if they were not related by blood, he would consider her his child if she carried on his legacy.