The first part of Pikachu's name, "pika", comes from the Japanese word for the sound that a flash of lightning or the gleam of something shiny might make. This word is an onomatopoeia - similar to ...

just in case you wanted to fall asleep to a repetitive refrain of "pika pika Pikachu." Even so, Pokémon Sleep is the franchise's first venture into sleep tracking. I'm not sure if I would call ...