Someday Will I Be the Greatest Alchemist? is a Manga/Manhwa/Manhua in (English/Raw) language, Adventure series, english chapters have been translated and you can read them here. You are reading chapters on www.mgeko.cc fastest updating comic site. The Summary is

Iruma Takumi, a 40-year old salary man, was dragged into a hero summoning just like in a template. What was his fate? The Goddess sent him and the heroes to the other world separately. With the Goddess’ overprotective support, he landed in a different world looking handsome, rejuvenated, and quite different from a Japanese. Although he wanted a slow life while working in the manufacturing trade, that was not permitted by the Goddess’ special body and abilities. Would Takumi be able to live a peaceful life in a different world?