The Milk-Squeezing Hunter's Otherworld Milking Chronicles: A Dull Male Farmer Toys with the Captive Nipstricts of Every Species

Kakeru Endo, a farmer from Hokkaido, is suddenly transported to another world while taking a bath one day! In this new world, the breast milk of magical beasts is a powerful energy source used for all kinds of tools and weapons, sustaining the lives of the common folk.