I've Been Killing Slimes for 300 Years and Maxed Out My Level, Vol. 3 (manga) — Kisetsu Morita

When I first came to this world, I said I'd live a carefree, laidback life. Recently, I've been thinking about trading the R&R for quality time with my new family, but... Argh! First, Falfa gets stuck in her (admittedly adorable) slime form, then a witch cons me and gets me involved in a huge mess...! Why does this keep happening?!