In this world, Doraemon is not with Nobita but with Dekisugi instead. The reason why Doraemon came to the past is known only to Dekisugi and Doraemon.
"Nobi-kun, Can you do your homework? I'll teach you."
"Nobi-kun got punched by Gian again? Come here, I'll treat your wound."
"Nobi-kun!"
don't know why Dekisugi seems to be approaching Nobita more often lately. Even a simpleton like Nobita knows that Dekisugi has been trying to talk to him a lot lately. It's not that he hates it, it's just that it feels like talking to a scientist about a monkey. Others also seemed to know and found it surprising but novel at the same time. Both his words, tone of voice, and actions made Nobita speechless the entire time Dekisugi did that.
For Nobika, in the other world, he would be the one going on adventures. But here, Dekisugi has taken Nobita's place. And Nobita? He's just withdrawn, as always. Dekisugi and Shizuka are adventuring in various lands, but he doesn't pay any attention to them. Because without Nobita, it's meaningless.
Doraemon tells him that the reason he went back in time was because adult Dekisugi asked him for something...
The school was still bustling at lunchtime. It was another ordinary day, but not for Dekisugi. His hand was gripping Nobita's shirt in the middle of the hallway, causing everyone to stare at them with curiosity and shock. Because the smartest person in school was acting like a dog towards the dumbest person in school, before Dekisugi's voice made everyone who heard it blush, except for Nobita.
"Can you take me with you wherever you go?...I'll be a good boy."
Giant and Suneo immediately gasped in surprise, while Shizuka covered her mouth in astonishment.