Try a /weg/ recommended to me. Full of disappointing cosplay monster girls (It's using Koikatsu screenshots and dev is clearly lazy). There's a slime, maybe she'll do transformations... nope she just uses it to change clothes. At least she gave a palm job (as in fucking her hand/arm).
If you're curious it's 'Succubus Kingdom', but warning it's an ultra early version that like 40mins long and is extremely cliche.