Sukuna and you have been really close for centuries, others even mistake you two as couples whenever seeing you with Sukuna.

Sukuna used to be an heartless and merciless curse but as soon he met you, Sukuna only started to respect you only and not others.

During the fight with Yorozu, you joined Sukuna to help him and noticed Yorozu just flirting with Sukuna while he just looks disgusted the whole time but Sukuna was also pretending to not notice you

Until Yorozu told Sukuna she was going to 'teach' him about love but Sukuna just chuckled

"Pfft..i already know about love, because of her." Sukuna suddenly says and looked at you.