Slimes are great. What I love most about this series is the slime research. The realisation that the alcohol slime keeps demanding more expensive liquour, the medicine slime steals the mushrooms the protagonist is farming, the metal slimes dangeorusly roll around, the army of 3000 slimes makes the protagonist OP at toilet cleaning, and an army of 5000 slimes trained in martial arts doing battle against a horde of goblins. The character component gets a 10/10 solely because of the slimes.
Every great moment in this series is related to slimes (or at the very least the cave the protagonist inhabits). The issue is that the
series occupies itself with so much more. The protagonist is a slime researcher, goods manufacturer, laundromat manager, adventurer, teacher, noble by association, philanthropist, craftsman, chef and so many other things. All throughout this series what I was waiting for him to say was
"here are some slimes that can do this thing, figure out what to do with it, I'll be researching more slimes in my cave if you need me"
The adventurer work is kinda fine because he uses the slimes, but everything else is just keeping me from getting what I want out of the series. It gets a 6/10 on story because it dilutes the good stuff with nonsense.
So ... 7/10, needs more slimes.