sad obsession

"sad page!" rafael says.

rafael has an interesting obsession, and it's about sad faces. everytime he finds an illustration with a sad face on a book, he has to go back to that page over and over again.

anyone who knows child psychology can give me any insights about what such an obsession could imply?

靖愷看書時，總愛一看再看哭著的臉。到底是為甚麼？

(clockwise: buzzy from buzzy's big beach book, octopus from water water everywhere, puff from puff the magic dragon, rabbit from carrot soup)