Live Freely in Another World with an Equipment Manufacturing Cheat, Vol. 4

A young man, Touji, is summoned to a different world similar to the online game he once played. Utilizing his game knowledge, he perfected his production skills and enjoyed a carefree life in another world with his cute and reliable servant... In an unexplored region he visited in pursuit of a phantom rare material, he decided to save the fairy tribe from a crisis!? What's more, the beautiful girl Dungeon Master he had previously saved came rushing into his house...?