This was a great episode. If only all the Jouto fillers could have been this good we wouldn't have had such a problem. On the one hand we have character development for Kasumi, which was extremely rare in Jouto to say the least, and what's more Satoshi gets to hold Togepi for the duration of this episode, freeing Kasumi to be herself for a change and not merely a mobile shelf for said pokémon.
Then we have the Takeshi x Miyuki thing going on while they're trying to find Kasumi and Marill, which is in my opinion one of the sweetest, yet most underrated pairings in the fandom. If you seriously tell me they didn't have a thing for each other I will slap you with a shoe.
Oh, and Marill was cute too, crybaby though it was. I found it funny how Marill's outbursts are all but identical to Yogirasu's screech attack.
Overall, classic episode. It seems a shame that Takeshi should never again see one of the few girls who actually showed interest in him. The more I'm thinking about that pairing, the more I'm liking it. XP