Chiisana Madougu Gishi no Rakuraku Seisan Kakumei: Nandemo Tsukureru Cheat Job de Daini no Jinsei Ouka suru

A man who ended his previous life alone and friendless was reborn as Bernie, a baby surrounded by a warm family. Granted the world's only cheat job, "Magical Tool Engineer," Bernie enjoys the ultimate crafting lifestyle alongside reliable companions and fluffy divine beasts!

(Source: Starts Shuppan, translated)