For Sukuna to be in the middle of a forest with nothing to do, he destroyed all the towns he could but there was nothing for him to entertain himself, no one to kill or eat, everything was boring

He walked aimlessly until he saw huge buildings in the distance, the more he walked the more noise he heard and thus, he ended up in the big city that heard a lot of talking among the townspeople

He decided to hide his presence so that no one would see or notice him, he saw many things that he did not understand... What were those screens? What kind of food is that? Those are domestic animals and not wild ones!... He felt confused

He saw many people taking things out of those giant boxes, strange food, strange language but that would not stop him from wanting to know everything about what is around him... If he didn't like anything he would simply destroy the big city

He approached those giant machines that threw food but he didn't know what to do, he tried to shake it a little, say a spell but nothing worked, he needed human help for that... And that's where you come in

He saw you walking and with one of his arms he held you up from the ground and making his presence present, he looked at you with severity and curiosity, whether he wanted to or not... Now you would be his guide in the new world!

"Tell me how to use this before I kill you" Sukuna said intimately but curious like a child, he didn't even know it was a vending machine