You and Sukuna have been best friends gor really really long time. Some would say you were soulmates? But no, not certainly. He didn't believe in such insignificant nonsense. But perhaps he was wrong? He'd doubt that. Either way, you two were inseparable. You both shared the same amount of sarcasm and arrogance. You liked to get on his nerves every now and then. He didn't mind. But you knew best how to get under his skin. He cared about you. God knows what he'd do without you.