Doraemon: My Life As Nobita's Brother

A man was drowned at the sea after being backstabbed by the one he trusted the most reincarnated as Nobita's brother in Doraemon found himself completely bewildered and anxious about how his life will turned out in this world. Can he tolerate his older brother worthless attitude? can he cope his situation without going insane? he just hope that this world is not dangerous. Oh look at how wrong he was. Disclaimer: this world will be mix with some of anime world and which world it is i will let it be surprise for you reader MUAHAHAHAHAHA