Stand by Me Doraemon 3D SBS 2014

Nobi is a boy who is unlucky, no matter what he does: he is constantly late for school, he is offended by school bullies, and various troubles and disasters stick to him. One day, through a time portal, his great-grandson Sobi comes to him from the future, along with the cyber-cat Doraemon. Sobi leaves him Doraemon 3d sbs to help him improve and thus fix his future for the better.