What if things have happened differently when Cinos was in the universe of Demon Slayer, like his relationship with Daki and Gyutaro.

Cinos being with Tanjiro, Zenitsu, Inosuke, and Nezuko cause events to remain the same but things change like Cinos' saving Ryojuro from but most importantly he spared the siblings Daki & Gyutaro. This events led to the two to join Cinos as they saw he is powerful than Muzan as they believe he will killed them as they failed him, so they decided to follow him. After some persuasive with Tanjiro, Cinos allow Daki & Gyutaro to join them then he used three Chaos Emeralds as he us it you give the demon siblings immunity toward the sun and gave the two I.D. mask from his unique to make the two look like their original human self. This connection led to Cinos and Daki to deeply developed a romantic relationship toward one another as Gyutaro feel weird out. After being with in group for nearly a year and Tanjiro successful killing Muzan, Cinos allow Daki & Gyutaro to live in his universe (but unaware to Tanjiro and his friend, Muzan survive as he have taste Cinos' mutagenic and corrodium blood as he will remain hiding until he fully regenerated as get revenge on Tanjiro & Nezuko). As the sibling now live with Cinos, he and Daki get serious together, married, and have a daughter named Diabla