Douki-kun comes back to the restaurant and sees that Douki-chan has fallen asleep. He helps her get home, and then...?
I just came back 
to pick up what I left here.
.عدت لآخذ شيئا نسيته
Sono passato a prendere
 quello che avevo dimenticato qui.
я просто кое-что у вас забыл.