Pokémon: Have You Seen This Pokemon? (Part 1)

[Serena is making her favorite desserts with Fennekin]
Serena: I'm sure Ash will like my favorite dessert, Fennekin.
Fennekin: Fen Fennekin.
[She sees Ash is carrying a big sack of Pokémon food]
Serena: Ash!
Ash: Hey, Serena.
Serena: What are you doing?
Ash: Carrying this heavy bag of Pokemon food for Pikachu. Man, this bag is really heavy.
Serena: Let me help!
[Ash and Serena put the bag of Pokemon food down on the front door of Ash's house]
Ash: Thanks, Serena. I owe you one.
Serena: Sure thing. (She kisses his cheek) Bye! (She leaves)
Ash: [notices a piece...