Izure Saikyou no Renkinjutsushi?
Possibly the Greatest Alchemist of All Time / Someday Will I Be the Greatest Alchemist? / いずれ最強の錬金術師?

Forty-year-old salaryman Iruma Takumi is caught up in a hero summoning and sent to another world separately from the heroes. There, he finds himself rejuvenated and handsome, with a body and abilities granted by a goddess’s overprotective support. Takumi hopes to build a quiet life through manufacturing, but his unusual body and powers make that difficult. Can he find the tranquil life he wants in this other world?