What a great episode. Hikari and Koharu have very good chemistry and both of them got good screentime. Their clashing personalities and the way they are connecting so far, I could watch whole episodes with them. Pocchama being the little awesome blue bird he is too! Ugh, Koharu is such an interesting character, I loved the "first journey completely alone" montage with her trying to start a fire, cook food, getting lost, etc- it has been a long time since those kind of moments happened on the series. While I like Eevee, I'm a bit sad that Yamper has been completely erased from her storyline atm.
The cameo of Ayako was fantastic, if only they had Yuka doing the interview and not that random lady it would have been perfect. We also got some references/callbacks to older series with music (please use more old music), Koharu making the same mistake Hikari did at the beginning of their journeys (and their moms being the voice of reason) and Ash talking about a battle against Darkrai (either Alamos or Takuto). It's probably a longshot, but the pamphlet could also be a tiny reference to the Old Gateau and the Phione Festival of Akebi Town.
Team Rocket was also nice, the interactions between the Matori Matrix and the TRio are as good as always. Apparently Unova has Pokémon Contests now? I guess it makes as much sense as Johto having contests back on AG, so. Ash/Goh parts were boring but sadly needed in order for the plot to advance. It's almost a crime that the motto was parodied and Team Rocket was not there, so the parody back on the original series and DP keep being superior.
I know it won't happen, but I'd like to see more of Hikari- her Pokémon and rivals next episode. The contest is supposed to happen too, so there is probably aready a lot :/