Possibly the Greatest Alchemist of All Time

The assassins are identified as Sidonia's Divine Light Squadron. Fortunately, Godwin, the Church of Creation and the Adventurers Guild agree Takumi's safety is their top priority. Takumi begins working on a barrier device to protect their home. The girls insist on adding a female warrior to their party to protect Takumi on quests. Takumi experiments with creating golems as an extra layer of defense. Following his squad's capture, the Emperor decides to temporarily leave Takumi alone and focus on summoning the hero's in three months. As creating a golem is difficult, Maple suggests Takumi simply tame a wild one. Takumi locates an Iron Golem which turns out to be guarding a temple dedicated to Nolyn, making it his immediate friend and he tames it without needing to fight it. He names it Titan. In the future Akira and Yamato become arrogant and cruel and Akane wants nothing to do with them. Titan receives a robot-like body of adamantine and mithril, the ability to talk, and a second, much larger body for emergencies. Meanwhile, Nolyn is concerned the belief from the Church of Divine Light's followers might cause Anat to manifest as an actual Goddess, an evil one. She hopes Takumi will soon be powerful enough to end the war with Sidonia in the future. (Source: Wikipedia)