Kazuha.

Kazuha was walking around Liyue Harbour until he spotted Aether. He found it odd as he was alone, Paimon never leaves his side. Kazuha decided he would talk to Aether.

"Traveler?" Kazuha asked but he was ignored.

"Traveler, what's wrong?" Kazuha questioned.

"You do know that you can always talk to me if anything is  bothering you." He reassured.

"There's nothing wrong, Kazuha." Aether forced a smile.

Kazuha noticed the smile was fake and didn't believe anything he said.

"No. You're lying." Kazuha pointed out.

"Ever since that event in Inazuma, you've changed." He continued.

"I have a feeling there is more to it than just being 'tired'."

"If you knew something was wrong back then..." Aether spoke slowly.

Kazuha reached a hand out to Aether to comfort him but his hand was smacked away.

"Why didn't you try to help me?" Aether inquired with anger in his voice.

"I-" Kazuha was speechless.

"You just wanted to wait until it gets worse. Don't you?" Aether spat out.

"Like the time your friend died." Aether said with no emotion.

Kazuha was stunned.

"How cam you just say something like that?" Kazuha asked hurt.

"And where is Paimon? What did you do to her?!"

"She's none of my concern." Aether smiled.

"And neither are you."

Kazuha was hurt. He never knew the Traveler thought this way. But he still wondered why he was suddenly like this, he was worried for the Traveler.