Top image: The eagle that represents Haru, his future, and his freedom, seen throughout the series.

Bottom image: Doves that appear after Haru and Rin swim at the aquatic center in episode 12, season 2.

The difference between both images is striking.

In the top image, you see a lone eagle flying high on warm air currents. It’s free, but solitary.

In the bottom image, you see a pair of doves flying into the sunset. Doves are believed to mate for life, and they’re often used in symbolism to represent love, faithfulness, and devotion, as well as never being separated from the one you love. 

They are used to set off the contrast between Haru before and Haru after, when Haru tells Rin that he found it — his dream — and it’s clearly with Rin in Australia, or wherever else the path takes them. Rin needs Haru to show him the way, but likewise, Haru needs Rin. Their fates, their paths, are intertwined and inseparable, and without one the other would be lost. They are meant to be by each other’s sides.

Doves aren’t a subtle symbol of this. They’re a glaringly obvious metaphor that’s hard to ignore.