Maganan&Danai
Hana No Arashi
Tamen de Nagashi
Miss Angel and Miss Demon
Titles might be off as it's from memory, but these are a few that match the criteria. You could also click on the Yuri tag and sift through the mangas that don't have the drama tag if you want more, good luck, and I hope you enjoy!
Also, My girlfriend is a gamer, very fluffy, established relationship. You could also read Roadqueen: eternal road to love, but it has drama, mostly a character being a big dumb lesbian.
It's Magan&Danai
Looking for any really sweet yuri mangas. Not wanting much drama