the progression of yukino liking him back felt quite fast, i would prefer it if after the second confession he said something like "dont say it, i cant say it back. but i dont feel far off from feeling the same" not accepting it but saying he's started to feel something too... or! not say it but a thought bubble saying it then in the festival something triggers him to fall fully. the not replying could be a minor conflict that easily gets solved but shows the sincerity of yukino's feelings.
besides this, I enjoyed it a lot ^^ very cute >__
Furimuite Yukino-chan!