Responses
I think the author will leave the time travel thingy open ended. We can choose to believe he really did have the ability, or like Kenya said, all of that was woven in his imagination during the coma. But yeah all evidence points to the time travel

this manga can't be ended yet, since the author didn't explain how Satoru can do all the time travel thingy ;;n;
and ahh.. seeing what satoru's mom has done all those things for satoru, makes me wanna be more kinder and appreciate my mom more..