Well, Tumblr can also be a good place to look for 'Reborn x Fem Tsuna' fanfic. There are many fanfic writers who post snippets or links to their works on their blogs. You can follow relevant tags like #RebornxFemTsuna or #TsunaFanfic. Additionally, Reddit has some dedicated fanfic communities where you might stumble upon such works. Just be sure to follow the community rules when searching.
You can try searching on fanfiction platforms like Archive of Our Own (AO3). There are often a great number of fanfics in various categories. Just type in 'Reborn x Fem Tsuna' in the search bar, and it will show you relevant works. Some fanfics might also be available on FanFiction.net, though the tagging system there might be a bit different.
Another option is to join some anime or Katekyo Hitman Reborn! specific forums. These forums often have sections dedicated to fanfiction. Members of the forum might share their own 'Reborn x Fem Tsuna' fanfics or recommend ones they've read. You could start with popular anime forums and then narrow down your search to the relevant sections. It may take some time to dig through, but you might find some hidden gems.
The best chapter pointer here is Chapter 191, "Sister, Jiang Cheng is bullying me!". It opens with This change made Jiang Cheng extremely uncomfortable. and closes on Meanwhile, Jiang Shixu was staring intensely at the fragments on the floor..
Chapter 165 is the strongest chapter-level answer because it starts from How come everyone else got a solid six points, and he ended up with just... and follows through on Various explosive Weibos sprang up like mushrooms after the rain, and....
A practical answer is Chapter 169, because it turns the idea into a concrete scene. The chapter opens with Everyone: "What?!" Seeing the shocked and bewildered expressions on their..., adds pressure through If you signed up, be ready mentally.] [Exactly, supporting the sister..., and ends on Wen.
If you want the clearest chapter reference, go to Chapter 160. Early on, As the sky gradually darkened, the originally mild drizzle began to...; later, the chapter leans on Jiang Li looked up at the sky and turned to the people behind him and....
A practical answer is Chapter 134, because it turns the idea into a concrete scene. The chapter opens with After a brief noon rest, the production team was up to their antics again., adds pressure through Thus, Jiang Li's live stream was once again flooded with netizens coming..., and ends on [Are.
Look to Chapter 211 for the clearest answer. It begins with Advanced Repair was even more outrageous, costing a whole 30 points., keeps building through Not to mention the 50 points for Supreme Repair., and lands on A young master from the Beijing Circle has actually descended to the point....
The best chapter pointer here is Chapter 170, "This Family Will Fall Apart Without Jiang Li". It opens with Watching the two who had long remained silent, the PD shifted his position... and closes on [Didn't the other guests also do farm work in the rain all morning, isn't....
A practical answer is Chapter 183, because it turns the idea into a concrete scene. The chapter opens with Seeing that he held a blue ball identical to Su Yinwan's, Jiang Yan..., adds pressure through As for the leftover person—" Saying this, he looked towards Jiang Li, "You..., and ends on Hadn't.
A practical answer is Chapter 168, because it turns the idea into a concrete scene. The chapter opens with Su Yinwan spoke those words with a pitiable expression, then lowered her..., adds pressure through But this time, for lunch, Jiang Li cannot help, the rest of you must..., and ends on The Gu.
Look to Chapter 211 for the clearest answer. It begins with Advanced Repair was even more outrageous, costing a whole 30 points., keeps building through Not to mention the 50 points for Supreme Repair., and lands on A young master from the Beijing Circle has actually descended to the point....