>>404095891997, Lei Nekojima 猫島礼 illustration for one of the 10 Pokémon mysteries (ポケモン10の謎?) from the booklet PokéBon edited by Shogakukan.
Mystery 1 - Where's the bike stored when the protagonist is not using it?
"You know what Pokéballs are, right? Actually, there are many different kinds of balls, and it seems like you can even fit items inside some of them, so that you can easily take them in and out!"
