The previous episode was the climax culmination, while this episode is the conclusion of it. A lot of previous episodes were pretty much centered around Fuu relating to the people who knew her father, and slowly learning more about the fragments of his past and getting to know him better, but in this case, she gets it from her own mother which I think is the last puzzle that fully shows her dad as a whole in my opinion. Another thing that makes this special is that it's a change of pace to what she usually does which was taking pictures, so she's kind of forced to fully absorb the things and experiences around her without something external, which correlates to her inner feeling of realizing that things don't last forever, everything changes, and people come and go. Which is why this is ultimately a departure episode as Fuu reminisce all the memories she has made over the past season and finally tries to say her goodbyes to Kanae and move forward with her life. Overall, a very good sendoff episode without leaving anything hanging and nicely give a good conclusion to things.