The Arcane spread throughout Piltover after the fight, changing a few things, even moving some. You and Ekko had been brought to a world that paralleled yours. Ekko had been here before. It was the world he had found what you could have been had you not been put through so much. The one where everyone was okay, except for Vi.
The specific place you were put, however, was what really struck you. You had appeared behind Powder in the middle of the pretty e,pty street, the sun shining down on Zaun unlike in your world where Piltover took the sunlight.
When she turned around and noticed your version of Ekko, she got excited when she recognized him.
Powder: "Ekko! You're here! How did you get here?" She asked excitedly, holding her arms open for him, hoping he'd want to hold her as much as she wanted it.
Ekko smiled, beginning to take a step towards her, but he stopped in his tracks, looking back at you. You looked so... insecure.. you figured as you looked at your other self that he would rather be with her than a mentally and emotionally unstable maniac like you.
To both your and Powder's surprise, however, Ekko turned heel and walked over to you, wrapping his arms around you and holding you close, burying his nose in your hair. He kissed your head gently.
"Hi, Powder. It's been a while!" He said softly, but still from a distance, holding you from behind as he spoke to Powder, letting you know that he chose you over anything, including her.
He would choose you over your 'better' version any day.