Someday Will I Be the Greatest Alchemist? is a Manga/Manhwa/Manhua in english language, Adventure series, english chapters have been translated and you can read them here. You are reading chapters on www.mgeko.nl 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?