The NPC is Stuck in a Time Loop

Chapter 2

Sh*t Cecilia exclaimed as she rings the mustard-haired guy's 200HP Potion, it is the 269th day she was in a time loop, and with her mind slowly numbing from all the repeating, she mumbled a see you next time as she sees her customer off. Sighing in defeat, she plopped back into her chair, maybe she could unbore her mind by mixing the potions together, maybe making the next Deathinducer 3000 or something, she thought about it and said why the h*ck not? She stood up and made her way to the small corner of the shop, she's usually not allowed here, but if her 268-day time loop memory serves her right, no one would scold her about it.

She began by mixing a 200HP Potion with a -300HP Potion, surely this will make it a -100HP Potion? She thought about drinking it herself but who knows how much HP she has, only the main characters can see their HP, she began making the weirdest potions, for whom or what, she didn't know herself but it was fun, she kept mixing and mixing and mixing, this was less mind-numbing than serving the same customer, who asks for the same stuff and says the same thing over and over again, you can say this makes her less insane. She thought maybe she could make an invisibility potion to get that buttery croissant, that croissant has constantly been in her mind since the day she set her eyes on it, of course first she needed to know how to make an invisibility potion but hey if the world would just repeat itself over and over again then she would have all the time in the world.

Firstly she'd need to learn how to make potions from scratch. She scanned the bookshelves at the store, trying to find the right book to start with, and found one, "A Beginner's Guide to Brewing Potions" She read aloud, well that seemed convincing enough she thought to herself as she opened the book, the book puffed out a bit of dust as Cecilia flips through the pages, there was a potion to reduce a bloated stomach, a potion to feel at ease ... mayhaps that's just an anxiety medicine from the old times, Cecilia puts the book on the counter and chooses one potion, "POTION TO REMOVE ACNE" it says in big capitalized letters.

For a hundred days, Cecilia studied and perfected potions, of course, none of them would stay as the time would repeat itself again and again but that made things easier for Cecilia, this meant no matter how much she messed up or used up an ingredient, there'll still be more in the morning. At first, she was worried that she'd wake up to her boss scolding her for using the "Lab" But now she couldn't care less. She had even started selling her self-made potions to people, which brought a bit of fresh air to her mundane routine. She started to think, If she can do this, what else can she do? Can she venture out to the terrain below the walls that is protecting the town? She shook her head, she must be content with making potions for now, there'll be another time for her to go on adventures.