Notes:

Ash and the others go to the Pokémon School, just like any other day. But when they get there, Professor Kukui gives them the homework assignment of trading Partner Pokémon with one another, so that they can get well acquainted with Pokémon other than their partners. It's decided that Ash's Pikachu will spend time at Lillie's house, but Lillie has still not become able to touch Pikachu.