Once again, I love this! So at this moment, I've gotten both the new girls and their animated scenes as well as having fought the shiny joy a few times. I've not gotten that joy scene yet- starting to think it doesn't actually exist. Like unicorns.
Anyways, I have a few suggestions for the next version! Or two...
1. You can totally use the Eevee cosplayer Eva in a fun way for summons! You can make it so that there's like a 25% chance that when you cast a spell and successfully summon the corresponding cosplayer, that Eva will show up as well in a similar themed costume! Like for Phoebe, Eva shows up as a Jolteon. For Ivy, Eva's a Leafeon, and for Carmon, Eva's a Flareon. And when she does show up with them, the attack does double what it normally does!
2. For Michelle, you could add a water spell that's either pure damage or causes something like confusion. Make it like an end game spell, where it's like 4 times as expensive as the others. Maybe?
3. As for the Ultra Rare Cosplayers, they're still a bit too rare even with the books. That said, I've fought Joy like 3 times after buying the book 5 times.
4. Oh oh! And one last thing! You should totally add a Con-Dex, which shows each cosplayer like a pokedex would but also shows how many times you've fought them, lost to them, as well as personal information like measurements, times had sex with and other easter egg like information like their kinks and such. It would be an awesome edition. I could however, see it forcing players to totally start over, so that the battling info is correct.