Goodbye Kitty: Keroppi invites Kitty to join him on a trip around the world. But her friends panic about her leaving and use up Kitty's precious time to pack. (S1 ...

Hello Kitty, with her happy-go-lucky spirit, has met her match: Gudetama, a lazy egg yolk with a defeatist attitude and a growing following. Photo: Miho Inada/The Wall Street Journal ...