Elemental Hero in Teyvat

It currently nighttime now, Sekai is currently walking right now after dealing with some adventure guild commission around Mondstadt while gathering information about whereabout of Fatui's base after Jean trust him of information about Holy Lyre.

Sekai: *sigh* So much work, I'm amaze how Acting Grandmaster can handle so much task at once.

He said walking, unknowingly been follow by shadow figure.

???: Evil…

Sekai: huh?

Sekai heard this when suddenly the shadow figure leaps out from nowhere and tries to stab him, but luckily Sekai manages to dodge it barely missing his "bone of my sword" with just a few inches away from unknown person polearm.

Sekai: W-what the heck?!!

As Sekai looks at his assailant, he saw a woman with ghostly pale grey skin. She has choppy wine-colored hair in the back, with some strand of her bang colored darker red and she has pale magenta eyes with cat-like light pink iris, and noticeable bags under her eyes. She almost always has a serious expression on her face.

She wears a form fitting nuns' habits consisting of long white and black coif with red lining, a white sleeveless turtleneck top, long white glove, and a long red and black skirt that partially reveal her right leg and completely reveal her left. She wears black belt around her left thigh, along with black fishnet tight and silver high-heels and is adorn with multiple silver and white gold accessories embedded with red gem; including tiara on top of her coif, a silver pendant, multiple silver claw ring on her fingers and small silver censer tied to her right waist with long piece of black cloth. Her cryo vison hang off of her waist on her lower back.

Sekai: Who are you!?

Sekai is sitting on the dirt right now with a woman in nun outfit comes out of nowhere and nearly cut off his "Bone of My Sword". Eventually Sekai manages to snap out from his shock and quickly jumps backs and catch his breath. Then he sends a glare at the nun.

Sekai: Hey!! What's the big idea attacking people out of nowhere?! You crazy nun!

???: Stop wasting your breath! Get eliminated!

Sekai: Wait what?! WHOH!!

Sekai barely dodges the nun polearm as she keeps thrusting, trying to impale him, but Sekai dodge her attempt with ease. The nun seems to be getting more and more irritated due to Sekai who keep on avoiding her ongoing strike.

???: Tch! Quite dodging like a cockroach!

The nun rush at Sekai at top speed making Sekai dodge once again but this time he quickly uses cyclone punch at the nun polearms pushing her back, leaving her in shock. Sekai used the opening to get away from her, but the nun manages to snap out of her daze and quickly follow him.

Sekai quickly parried her thrust with his palm coated with cyclone element, as the nun continue thrusting her polearm until Sekai manage to push her away with mini–Cyclone Blast. 

Just as Sekai was about to rush past, a playful smirk on his face, he suddenly pivoted toward the nun.

Sekai: "Sorry, lady, but I'm in a hu—"

Before he could finish, his foot caught on a loose pebble. His balance wavered, and in a split second, he stumbled forward—straight into the stunned nun.

Their lips met.

For a brief moment, time seemed to freeze.

Sekai's eyes widened in sheer shock, his mind blanking out from the sheer absurdity of what had just happened. The nun, equally stunned, remained frozen in place.

Realizing what he had done, Sekai shot back as if he had just been struck by lightning. He scrambled to the ground, bowing his head repeatedly in panic.

Sekai: "I-I'm so sorry! That was an accident, I swear!"

His face burned with embarrassment as he awaited whatever reaction was about to come his way.

Sekai: Gomen'nasai!! X3

Sekai: I'm sorry I didn't mean to do that!!!

He said in utter panic, meanwhile the Nun still remain in shock as she started to drop down her polearm and fall on her knee as she places her finger on her lips.

???: T-that was my first kiss…

She said to him making Sekai more miserable as he placed his both on face and shouted

Sekai: OH MY GOD!!!

???: Y-you took it… you took it…

Sekai: Miss, I'm r-really S-sorry!!

Sekai said trying to calm her down as she keeps mumbling words that he even can't hear. After a moment Sekai realize that this situation similar on what happen with Eula, making his fear for a worst quickly Light Speed away, leaving the nun alone.

When he felt, he was far enough from the scene, his start to have coldsweat and his hand starts shaking. 

Sekai: I fear, I get infected by Emiya curse…

Sekai: Trace On…

Suddenly a sword form at his hand, he feels like the sword is teasing him…

Sekai: Damn it!!! Why I got his ability that come with his E luck!!! Damn it all!!

He spoke still spamming light speed to get away, meanwhile contrary to Sekai expectation the Nun didn't give a chase at all, instead she keeps mumbling while still touching her lips

???: W-what is this feeling?

She said with blush on her face and heart-shaped pupil on her eyes.

???: C-could this be a sign?! Did Lord Barbatos answer my prayer?!

Then he claps her hand together and looked at the sky with beaming smile on her face.

???: COULD THIS BE LOVE?!!

She shouts to the night skies.