Japanese Title: Lilie, Take Good Care of Pikachu
Original Airdate: June 15, 2017
US Airdate: September 9, 2017
Ash and his friends switch Pokémon for two days for a class assignment. Ash takes Snowy to his house while Pikachu goes home with Lillie.
This episode contains examples of the following tropes:
- Ash Face: Harper and Sarah end up with this when they play with Turtonator, and they accidentally step on his back thorns, triggering his Shell Trap move and blowing up in their faces.
- Big Eater: Snowy picks this up from Ash. In the Japanese End-of-Episode Silliness, this is shown to appall Lillie.
- Chekhov's Gun: Pikachu, Togedamaru, Steenee and Popplio race in the beginning of the episode and Pikachu wins. Lillie, recalling Pikachu's speed, uses that to her advantage against Hobb's Oricoro.
- Deer in the Headlights: Once more, Lillie has to learn not to seize up in contact with another Pokémon.
- Face Fault: The entire class does this when they realize they will need to swap their Pokémon amongst each other for the weekend.
- Fire-Forged Friends: Lillie figures out with Pikachu that the easiest way to get over her fear of various Pokémon is to battle with them.
- Fragile Speedster: Exactly what Pikachu shows he is. Though the Fragile part depends on just how pissed off he is.
- Mundane Utility: The trainers find good uses for their traded Pokémon this episode.
- Steenee uses her Aromatherapy to help Sophocles sleep.
- Popplio's Bubblebeam is used to help calm down two fighting Tauros and to give them a bath.
- Togedamaru's rolling (combined with two cleaning cloths stuck to its spikes) helps make it easier for Mallow to clean the floor.
- Out of Focus: Team Rocket never appears in the episode at all.
- Reality Ensues: Togedamaru's hyperactive rolling in a filled restaurant only causes it to crash and cause a huge mess.
- Tastes Like Friendship: From the beginning, Snowy warmed up to Litten most readily. Litten is the one that got Snowy to open up to Ash and his other Pokémon by personally offering her a Sitrus Berry.