the shadow monarch of fairy tail( male reader x fairy tail girls harem)

¿ what if a boy who was an E rank mage die and revive after so many years decides to become stronger due of broken promise only to find out that they forgot about him? what if he had magic like no other... what if he was chosen from a previous succesor of different timeline?

a boy name Y/n a E rank mage of fairy tail who was murder by achnologia while saving his friends during a aftermath, but then some entity revive him an even granded all the ability he got by the entity known as the ashborn giving a reawakening state and return in magnolia to notice few changes but most importantly: they forgot him not by memory lost, but they move on which then Y/n decides to train all those years....

till fate brought them in a incident of the portals known as Gates and thus his adventures have begin with his job class: the shadow monarch