I doubt this will happen but it would be cool if Frieren, Fern, and Stark ever stumbled on EverRealm though (a crossover, perhaps?)
Like.... Stark would easily get along with most of the villagers in Enchancia and the kids especially with the personalities similar to James, Camila, and Zane and sometimes volunteers to work in a village garden
Fern.... I think she can somehow get along with Layla and Sofia....because they're both hardworking, even Baileywick because he somehow resembles Heiter, who became her parent figure after her parents died in a war
But she needs to be careful about her joking that "Alcohol is the best medicine" though lol
Frieren....Hmmm....she can part-time teach the students in Charmswell especially Sofia & Elena about magic, only if they offered her grimoire, potions, magical artifacts and spells so that she doesn't need to shop and waste money
it would be cool if she also teaches them how to cast Zoltraak, defensive or 'useless' spells
Which makes everyone in Charmswell curious especially Sofia and Camila, and wanted Frieren to teach her all of the 'useless' spells
I think it would be fun seeing Lady Saddlespur, Miss Nettle and Cedric interact with Frieren
But I also think that Frieren would also relate with Miranda and Roland especially when talking about their children growing up and how they process their grief, regrets and reminiscing memories about their loved ones who already died. It would be lowkey sentimental for me if that'll happen.
Bonus: Idk if it's possible but I think Frieren would cast a field of flowers in Miranda's special garden (bonus if it's blue moon weed (nemophila flowers)) also Himmel statue being in every kingdom in EverRealm as well lmaoo
Lastly, whenever someone questions why Frieren is doing all of this despite being a 1000 year elf and in a different world as them, she would always tell them, "That's what Himmel would do."
Which doesn't make sense to the people at first, but she started to preach about her past companions, with Himmel mentions the most.