Give me ideas for my D&D series

I’m about to start writing my ballbusting series and I need some ideas. So the premise is that there’s a mostly female campaign with only one player being male and then one of the girls decides to hit an enemy in the balls, something the one male player is fairly uncomfortable with but then the female DM decides to make this move incredibly powerful, dealing a lot more damage and causing the enemy to be temporarily blinded, stunned, and incapacitated. The DM also makes it so these kinds of attacks are a lot more effective when being used by female characters since she believes men would instinctively hold back a little due to being uncomfortable with the fact that they have balls of their own. The girls think it’s really funny and start attacking the enemies nuts a lot more, but this means they are all significantly more powerful than the male player. This becomes especially clear when the girls start using this move on him in order to get loot first, steal his things, and persuade him into doing things. He says this is way too powerful and fairly unrealistic, so the DM suggests they test it out for real and see what he thinks then.
I’m thinking I’ll start with a chapter 0 that sets up the main campaign and explains how these characters ended up in this situation (the group used to be mostly guys, but as time went on a lot of the guys slowly trickled out due to scheduling issues while more girls joined in)
The characters include:

Max:
- [ ] Fairly tall, skinny guy with a slightly above average penis and large balls
- [ ] Plays a human fighter
- [ ] He was an original member of the group and the main character of the series

Jennifer:
- [ ] Very tall girl with huge tits, dark hair, and pale skin
- [ ] Plays a half-orc barbarian
- [ ] She wears a low cut shirt to their first session and gets jokingly upset whenever MC stares
- [ ] She’s the second most recent addition to the group, only joining in the one shot they ran before this

Lily:
- [ ] Short Asian girl with a great ass
- [ ] Plays an elf rogue
- [ ] She gets upset when people make fun of her height. Her character also loves stealing and upon learning how powerful nut shots are in this campaign, she begins using that a lot to steal

Daphne:
- [ ] Average height, blonde hair, and a bit in the bigger side (though this does make her ass and tits bigger too)
- [ ] Plays a teifling sorcerer
- [ ] She’s very oblivious to her surroundings and often accidentally puts MC into unintentionally sexual situations
- [ ] Later on, the DM works with her to come up with testicle based spells she can use
- [ ] She’s Sarah’s best friend and joined shortly after the group was created

(Currently nameless ranger):
- [ ] (Personality and appearance tbd though I think she should be black)
- [ ] Plays a halfling ranger
- [ ] Loves shooting her enemies in the balls from a distance, but later on gets an animal companion that she sends out to just tear into enemy testicles
- [ ] She’s a good friend of Lily’s and this campaign is her first time with this group

Sarah:
- [ ] She’s the DM. Her brother used to be the DM, but he just got a new job and no longer has the available time for that
- [ ] She’s a little shorter than Daphne with a slim build and brown hair
- [ ] She was one of the original members and she’s always secretly been a little into Max

Anyway, I need help coming up with ideas for some different busts I can include as well as more information about the ranger. I’d also like some ideas for the campaign setting itself, before it devolves into the girls kicking every pair of balls in sight