I don't remember the title but I do remember some details like a young girl who is dying of a disease and was accompanied by a large bearded muscle giant man bodyguard who has very big muscles. Both of them, seeking for a chance to attain immortality, visit a lone man who was said to have lived a very long life. At first, he tried to shoo them away. But when they were attacked, the muscle man pleads with the immortal to save the girl. He reluctanly agrees to help them.The muscle man is killed but the immortal saves the girl.

Please help identify the title, thank you

Epic of Gilgamesh?

Epic of Gilgamesh, huh? I am checking it out now. Now I have seen this manga. It may not be exactly the manga I have forgotten but thank you for helping. .

is it Uratarou?

It is Uratarou. Thank you very much. It is exactly the title I have been looking for.