Rise of the immortal Alchemist

Elixir is something that can grant a human eternal life. Augustus Jones is the first human to discover about the existence of Elixir. After his death his son Arthur Jones will succeed in his discovery of Elixir. When he loses his childhood friend and crush he falls apart but this makes him focus onto Elixir and immortality even more than before. It is at this time he founds the entrance to the other world. Then he meets new people there. Thus he wants to resurrect his lover which can only be found after discovering Elixir and Immortality.