All Amourshipping Moments And Pottery

- At the last scene of "Till We Compete Again!" when Ash is shown entering his house the white flowers in the foreground are Baby Breath flowers which symbolize everlasting love. It's a hint from the writers that shows their content with the ending of XY&Z having Ash and Serena kiss. The flight Serena was going to board to head to Hoenn was H71 Latias. "H71" can be interpreted as the #071 in the Hoenn Pokédex, which is Mawile, or Kucheet (クチート) in Japanese. This can be read as a corruption of 口と, meaning "with the mouth", suggesting that Serena kissed Ash on the mouth.
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TL;DR: Serena definitely kissed Ash.

They meant for the viewers to assume that Ash and Serena are going to become a couple.

About AmourShipping and its Final Scene:

The idea to have a romance subplot apparently came from producer Shukichi Kanda, who came up with the idea of portraying things through a female lead's admiration for Ash, which then led to the suggestion that they'd have a flashback to a childhood meeting with romantic implications.

Oguro (Interviewer): I haven't watched the episode, so this might be a stupid question, but did Serena's love (for Ash) come to fruition? (Note: This interview was conducted hours before the final episode)

Yajima (Director): It didn't in the episode. I ended it in a way that her love will hopefully come to fruition in the future. Serena told Ash that she's going to improve herself, and then come back to him. Afterwards, she did something that's revolutionary-worthy (laugh). In the middle of production, I added in a scene intended to show them kissing. It's just that I wasn't allowed to have them kissing on screen, so I had Serena's feet "floating" to show it instead.

Oguro: So depending on how you view it, it seems like they might be kissing, right?

Producer (No name): No, it should look like they were definitely kissing.

Yajima: (Laugh) Whether they kissed or she whispered something in his ear, that scene was supposed to be ambiguous.

Oguro: For Pokemon, the XY series is quite the transition. In XY, you guys included a scene where Serena was thinking if she was on a date with Ash when they were walking on the street, blushing and all. The drama itself is quite interesting, but it does make you think how her feeling will be brought to conclusion.

Yajima: I was the one who wrote the final episode, but I tend to put my pen down whenever it's their parting scene. "How should I end it so that it'd be fair for her" tend to be the reason.

Producer: The actual scene differed from the screenplay, after all.

Yajima: That is true (laugh). The scene had her riding on the escalator for a bit, and then she ran back up and kissed him. Naturally, the escalator will take her down again, right? So while she's kissing him, she'll be pulled away. That's the scene that I wanted to make.

Producer: Kids are the main target audience, after all, so among the things we can't do, this series is definitely on the edge.

Yajima: I was thinking if it's possible to portray the loneliness from being separated forcefully, and that's when I decided on using escalator.

The kiss scene is indeed meant to be Serena kissing Satoshi, and his reaction to it is surprised awe, any ambiguity the scene has is so they could get it on TV in the first place.

Likewise, you're meant to hope and assume the two of them are going to become a couple later.
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noot9001.deviantart.com/journa…

www.youtube.com/watch?v=6TZDmW…
www.youtube.com/watch?v=bCWvnE…