Otousan (daddy) is back, right?

Earlier this week, Nori was travelling out of town, I took Yoshi to borrow few books in the library. One night, I was reading this airplanes book to him. I told him Otousan (daddy) was on it to a place far away. Since then, everytime when I read this, he would stop me and point to the same "passenger", then said "Otousan". .......the only thing is.....Nori is back in town, so...how could he still be on the plane, Yoshi?! ^_^