The answer.
...
Koutani lies under the tree. He seemed to be sleeping. Dreaming.
But it was time to wake up.
Koutani slowly opens his eyes. He blinks. He squints as a sparkle of light hits it. He slowly sits up, feeling lazy and exhausted... as if he had been dreaming for too long.
He recalls the "dream". The rustling of leaves wakes him to his senses. He slowly recognizes where he was and continues to remember what happened.
A smirk followed by a sigh of disbelief.
Koutani : Boku ga... baka da na. (I have been a fool...)
After stating that, he gets up to his feet, glances once more to the Wonder Tree.
Koutani : Arigatou. Subete no tame ni. (Thank you for everything.)
He rides his bike to a familiar destination : the secret garden behind the temple.
She was sitting on one of the rocks by the stream. Her shoes taken off and her feet submerged to the water. She was enjoying every moment of it.
Koutani walks to her side. Playfully, she ignores his presence and continues staring into the waters.
He sits besides her. He doesn't say anything.
Miyu : ... Okaeri. (Welcome back.)
Koutani : ............ tadaima. (smiles)
(I'm home.)
Miyu gently rests her head to his shoulder.
Miyu : So... Did you find what you were looking for...?
Koutani : ... Un.
Miyu : That's great to hear.
Koutani : ... you knew all along... didn't you?
Miyu : Hmmm?
Koutani : (takes a deep breath) How funny fate can be.
Miyu : ... how wonderful it is.
Koutani : Yeah...
Miyu : ... Sore wa unmei desu ne. (That's destiny.)
Koutani : ...... Miyu.
Miyu : Hm?
Koutani : ... I love you. I always did... and always will.
Miyu : (looks at him)
Koutani kisses her. She closes her eyes and responds to him.
"If you're meant to be together... Distance won't be a hindrance. Let it be time or place... Either its the past, present or future..."
The love that never ends.
Love of eternal destiny.
Eternity.
End.