Review responses:

(to BellAis1: my prologue is supposed to be short, the real "chapters" are gonna be longer than that, maybe 2-4 times as long, as far as I'm concerned)

Chapter 1 - USS (Unidentified Strange Slime)

Lumine and Xiangling were crouching behind a bush at the northmost cliff in Stormbeaerer Point. It was an open field on the edge of the cliff, where there were two fire braziers next to each other at the tip of the cliff.

And in between those two was a single platinum blue slime. It wasn't moving. Lumine turned to Xiangling, only to see her finger over her lips.

Xiangling pointed to the slime. Then she gestured to her Vision, all while making the least movements possible.

Fortunately, Lumine understood and they both used Elemental Sight. What they saw shocked them, and they barely managed to keep still and silent.

"Ultimate Slime"? What in the world is that? LEVEL 250,400?!

That level was insane, also added to the fact that the max level is 90. And a level 90 would already be overpowered, but 250.4 k!?

Lumine and XIangling barely managed to hold in their surprise and shock. They nodded to each other, then both sprinted straight out of there. They ignored everything - may it be monster, extinct boar, or the fact that they were completely tired and exhausted with a horde of monsters on their tail.

They dismissed the fact that they had no stamina left. They ran past and ignored everything in their path. Dragging Paimon along, literally, they ran as fast as they could, all the way to Mondstadat city, all the way to the Knights of Favonius Headquarters, and into Jean's office.

Good thing the Honorary Knight was with them, otherwise the guards would not have let them barge in in such a hurry. They thought it was something really important, so they led the two pass, though very alarmed.

Fortunately for Lumine and Xiangling, the Acting Grand Master was still in her office.

Jean POV

It was just another normal day. The usual hard work and stack of paperwork... until those two rushed in, and almost immediately collapsed out of exhaustion and breathlessness.

It was the famous traveling chef, Xiangling, and...

"Honorary Knight? What are you two doing here, and looking like you've run nonstop full speed across Teyvat? Is it really that important?" Jean said, slightly annoyed and surprised.

So, they told her exactly what happened, and what they'd seen. They didn't hide anything from the Acting Grand Master; they told her everything in great detail, including anything they thought was related.

...

As expected, the very first thing Jean said after they finished speaking was "250.4 THOUSAND!? Are you sure you saw it right?"

"Yes. We double-checked and triple-checked with Elemental Sight. There is no mistake," sighed Lumine.

"Hmm... this unidentified strange slime, I'll have to remember that," Jean mused, having already gotten over the absurd stats of this mysterious slime.

"U.S.S. (Unidentified Strange Slime)! Hehe!" Paimon giggled.

"Now's not the time for jokes, Paimon..."

Needless to say, a certain floating emergency food spread the word, and this new appearance became officially known as the Unidentified Strange Slime, USS for short.

(keep in mind that this chapter ends the 4 hours earlier in the prologue, don't get confused. That's also why this chapter is in past tense)

(for people who don't know, this story takes place after the Tensura WN ended, and right after the Mondstadt Prologue, and right before the Liyue chapter(s). In other words, Traveler had finished the Stormterror arc and talked to Venti under the giant tree, but had not started going to Liyue for the Rite of Descension yet.)

(speaking of which, I had not finished Tensura yet, so correct me if there is any mistake in the Tensura character background, what they call their friends, etc. ie. does Rimuru still call Shizu Shizu-san or Shizue)

(I will not make them go further in the main story quest/Archon quests anytime soon, though I might make them do some world quests or story quests)

(I'm still unsure about Rimuru's level, so could you give me your opinion in the comments. Is it too OP? Should it be higher? Or do you think it's just fine?)