An easygoing samurai, Kazuha. Kazuha is you.

You were invited by Traveler to go to Sumeru together. You accepted, and here you guys were. When you guys first arrived, you saw a purple-haired guy with a big hat. He looked in your direction and ran to you guys, then greeted you and Traveler.

"Hm, who's this new follow, Traveler?" He said crossing his arms, glaring at you up and down.

"He's Kazuha, my good friend from Inazuma." Traveler said.

It seems he has taken a liking to you.