After Nezuko became a human and Tanjiro became the demon king credits to my cousin Isabella for the art work.Basically in the story some of the characters are gay or bisexual or straight in this story was basically just about Sanemi and Giyu in the beginning and Giyu is Muzan's son but Muzan was never around because Muzan had an affair with Giyu's mom Ayane Tomioka and she had Giyu Giyu step father is Akhito Tomioka he hates Giyu because of the affair Ayane had with Muzan he is Tsutako biological father. Muzan never loved Ayane he never saw Giyu or her at all after the affair (Muzan is dating Kokushibo in the story by the way) Muzan wasn't their to support Ayane at all untill 21 years later he meets Giyu his half human half demon son and he starts to see him more often.