Responses
Maybe this: The Dark Mage’s Return to Enlistment
https://www.mangago.me/read-manga/the_dark_mage_s_return_to_enlistment/
Omg yesss thank youu
Please help me find this manhwa, the mc which is a guy traveled to a different world where he became a dark mage, then after many years he finished his job as a dark mage and his wish was to go back to his original world which came true, but to his surprise the world has became ruins and the monsters he fought back as a dark mage came to his world. Now he need to enlist because it is mandatory and he was the strongest there lol and he also has that favorite game character lumina? I forgot.