Not what you're asking for, but I just wrote a few paper letters to a friend who didn't have access to her phone for a while and got to use some old cute paper and stickers and make cool collages and doodles. Now I'm imagining Fortune and Eri in a stationary shop looking at all the cute stickers and washi tape and pens and stationary Eri can use with her brand new pen pal! And also so Fortune can restock on stickers. And would Fortune write to Fatgum so he has a physical copy of her love?
Awww, that's such a cute mental image! I could definitely see Fortune & Eri doing that kind of shopping so Eri will have everything she needs to make some amazing letters.
Since Fortune has never done that kind of thing before, I could see her giving it a try, and she would definitely wanna send a letter to Fatgum. After all, it's about time she sent him a fan letter XD