Inazuma City, Naganohara Fireworks Store.
The sky was just beginning to lighten as Yoimiya gently knocked on the bedroom door, her voice soft. "Su Xuan, are you awake?"
She waited for a long time but got no response.
Yoimiya pushed the door open directly, only to find the tidy room completely empty.
"Where is he?" Yoimiya's expression froze.
The evening before, someone had knocked on the door of the Naganohara Fireworks Store.
When Yoimiya opened it, she saw a black-haired, black-eyed young man who introduced himself as Su Xuan.
He had no Mora on him and was starving, so he asked to stay the night at her place.
Yoimiya could tell at a glance that Su Xuan wasn't from Inazuma. With the Vision Hunt Decree and Sakoku Decree in full effect, life was tough for outsiders.
Without a second thought, she took him in for the night.
But now...
"Where'd he go this early in the morning?" A flicker of worry crossed Yoimiya's mind.
Inazuma wasn't the same as it used to be.
The people of Inazuma might not say it out loud, but everyone knew outsiders had it rough—every step was a struggle.
Without a local to vouch for them, they'd get stopped and searched everywhere, then hit with steep fees for residency papers.
"He doesn't have a single Mora to his name. If the Kanjou Commission or Tenryou Commission stops him, he'll be thrown in jail for illegal entry!"
Anxious, Yoimiya was about to rush out and search for him.
But as sunlight streamed into the room, a golden glint caught her eye.
Following the shimmer, she saw a thick stack of Mora on the table.
Beneath the Mora was a note.
[Fireworks may fade in an instant, but their dazzling light lingers forever in the heart. Thank you, Summer Festival Queen, for your kindness. Until we meet again.]
"Mm!" Yoimiya's cheeks flushed red.
Fireworks were both fleeting and eternal.
That was Yoimiya's own understanding of eternity.
Su Xuan's words struck a chord, leaving her dazed for a moment.
But she quickly snapped out of it, staring in shock at the pile of gleaming Mora.
"Didn't he say he had no Mora?"
"Then where did this stack come from?!"
"Huh, what's this...?"
In her fluster, Yoimiya spotted a gold-embossed notebook behind the Mora.
It gave off a faint, ethereal glow.
The cover bore ornate lettering.
[Su Xuan's Travel Diary Replica (Yoimiya Exclusive)]
Whoa! A glowing diary? This was straight out of a fairy tale.
Yoimiya rubbed her eyes hard, but when she opened them, the notebook still shimmered softly.
"Yoimiya Exclusive—does that mean it's just for me?"
"So, I can open it and read it?"
Yoimiya knew diaries were private. Peeking was rude and immoral.
But the "Yoimiya Exclusive" on the cover felt like an invitation—like this diary was meant for her eyes, tied to her by some unspoken bond.
She was allowed to look.
"Just a quick peek?" With that thought, Yoimiya carefully flipped it open.
The first page wasn't a travel entry about Su Xuan. Instead, a line of text seemed like a warning to the replica's holder.
It basically said that no matter what, the holder couldn't reveal the diary's contents to anyone but Su Xuan and other holders.
And besides Su Xuan himself and other replica holders, no one else could even detect the diary's existence.
"So I'm not the only holder?"
"Who is Su Xuan, anyway? Why is he handing out these diaries to so many people?"
Curiosity burning, Yoimiya flipped further.
Finally, Su Xuan's entries appeared.
[Traversed worlds, and landed on the Teyvat Continent.]
[Unfortunately, I ended up in Inazuma—right in the thick of the Sakoku Decree and Vision Hunt Decree.]
[Luckily, I spawned not far from a kind soul's home.]
[Before the Shogunate Patrol Team could spot me, I knocked on her door.]
[The kind girl was just as I imagined. The moment she heard I was a penniless outsider, she welcomed me warmly.]
[Even made me a hearty dinner.]
"Traverser? Landed here...?"
"Is he like in that novel, 'Reborn as the Raiden Shogun, Then Invincible'?"
"Su Xuan crossed over from another world to Teyvat?"
Yoimiya's mind was overheating.
People on the Teyvat Continent knew concepts like [traversal] and [rebirth] from stories.
But concepts were just that—no one had ever met a real traverser.
Her first encounter with one had Yoimiya thrilled.
"So he's a traverser."
"And it seems like Su Xuan knows me..."
Remembering how he'd called her [kind], [warm], and [good-hearted], Yoimiya blushed shyly.
"No wonder he came straight to my door. He knew I'd take him in."
[The room she prepared for me was cozy.]
[But knowing Teyvat was a perilous world of supernatural powers, I felt lost about my future. Anxiety kept me tossing and turning in that comfy bed.]
[Until around midnight, with a soft "ding," my heart finally settled.]
[I unlocked a power from beyond this world. And I knew—this was just the beginning.]
[As time passes, I'll unlock more powers. I'll grow stronger and stronger.]
Yoimiya: "????"
"A random 'ding,' and he gets power from beyond the world?"
"That's easier than 'Reborn as a Hilichurl, Get Strong by Eating Sunsettias'!"
"Is Su Xuan just bragging?"
[To gain more power, I decided to embark on my own journey.]
[Before leaving, though, I wanted to thank her for her kindness.]
[And starting my travels required Mora.]
[Perfect combo—no need to overthink it. I made up my mind in no time.]
[So, under the cover of a moonless, windy night, I robbed the Yanguo Jiansi.]
Yoimiya: "!?"
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