One day, Bossun discovers a box of video tapes in his mother's room. The videos show his young mother, a pretty woman named Haru, and a man who looks just like him...
Looks like she's mistaken 
you for her grandson.
Creo que te está confundiendo con su nieto.
Parece que te está
 confundiendo con su nieto.
Parece que ela te 
confundiu com o neto dela.