2018. After finishing a mission one day, Itadori decides to go to the movies, Kugisaki decides to go shopping, and Fushiguro tells them he's going home. After parting ways Kugisaki is approached by a woman who suddenly asks if she was with Itadori-kun.
So the process of elimination 
leaves us with him.
.لذا بالاستعباد يبقى لنا ميكامارو
Wir kamen per
Ausschlussprinzip auf ihn.
Así que lo escogimos por descarte.
Hemos elegido a Mechamaru por descarte.
J’ai procédé par élimination.
Quindi, andando per esclusione, ci rimane Mechamaru.
Поэтому и надо проверить.