One idea could be that a Muggle teacher accidentally stumbles upon the wizarding world while Hermione, Ron, and Harry are on a mission near a Muggle area. The Muggle teacher could initially be in shock but then become intrigued and start helping them in unexpected ways, like using Muggle technology to solve a magical problem.
Perhaps the Muggle teacher is brought to Hogwarts to teach a special class about Muggle culture. Hermione is excited as she loves learning about Muggles, Ron is a bit skeptical, and Harry is just amused. Chaos ensues as the Muggle teacher tries to adapt to the magical environment and the students' reactions.
In a fanfiction, the Muggle teacher could be a relative of one of the trio. Let's say the teacher is Hermione's distant cousin. When Hermione, Ron, and Harry visit the teacher during the holidays, they discover that there are some strange magical occurrences around the teacher that they need to figure out. This could lead to a mystery - solving adventure.
The best chapter pointer here is Chapter 108, "Without accumulating virtue through words, calamities of bloodshed will only increase, not decrease.". It opens with In a glamorous Michelin three-star restaurant, Su Yinwan and Shang...
Look to Chapter 127 for the clearest answer. It begins with Witnessing Jiang Li leave with a bucket, Jiang Yan refused to admit..., keeps building through Otherwise, how would he ever show his face in the Capital again?"..., and lands on He Yun, who chose the codonopsis, became the one with the.
If you want the clearest chapter reference, go to Chapter 142. Early on, The ingredients for making Buddha Jumps Over the Wall were still on their...; later, the chapter leans on There were so many people in the village, just making a small portion was....
A practical answer is Chapter 143, because it turns the idea into a concrete scene. The chapter opens with Is there really such delicious fish soup in the world?, adds pressure through If you're still single, how about I set you up with someone?, and ends on The live stream audience couldn't help.
Chapter 104 is the strongest chapter-level answer because it starts from Zhao Lang let out a light chuckle, "Young Master Jiang, don't be nervous,... and follows through on Despite a whole day's labor, his face was sunburned red, his shirt had....
Look to Chapter 113 for the clearest answer. It begins with The next day, Jiang Lili was up before dawn as usual., keeps building through But this time was different; as she got dressed and opened her room door,..., and lands on If things are really as you say, that is indeed quite serious..
A practical answer is Chapter 111, because it turns the idea into a concrete scene. The chapter opens with The main room's door was pushed open just a crack, and the head of the..., adds pressure through Alright, those who think they're the king can step forward!" As soon as he..., and ends on.
A practical answer is Chapter 87, because it turns the idea into a concrete scene. The chapter opens with Luckily, at that time, Jiang Li had already taken her pot of stinky..., adds pressure through But she hadn't even been happy for long when reality gave her a cold..., and ends on I'm driven.
The best chapter pointer here is Chapter 147, "Jiang Li, We Are Going to Meet Again". It opens with Xiao Xueyi nodded in agreement after listening. and closes on Only Jiang Li glanced back at Director Sun, and then took out her own....
Chapter 137 is the strongest chapter-level answer because it starts from Jiang Li personally went to Lai Fu's tomb and performed a small ritual. and follows through on At that moment, Qi Tianyu had just finished his farming tasks, feeling....