How do i get over the post-credit depression? Will it ever go away somehow?

Guys i don't know what happened to me. I haven't watched any anime for like 10 years then last week i randomly watch this movie. God i never cried watching an anime before but the movie hit me like a truck somehow. I know the ending is wholesome and not sad or anything but after the credit rolls i am feeling.. hollow?

I cant describe it but i thought reading the manga would cure it so i sped through the all 62 chapters in the manga the next day. But the feeling is still there.

I watched it again with different dub and holy crap it somehow hits me harder now i have read the manga. I become now understand some scenes like why yuzu take photograph of dead stuff, and clearer view on why shoko wanted to.. do that stuff.

Help guys i tried watching other anime like your name but i still go back to this movie every time and every time i think about a certain scenes my eyes wells a little. How come such piece of story with fictional characters have such profound effect to me? Will it ever go away? Its been a week and i still think about it.