Allen Smith

Assassin (暗殺者, Ansatsusha) is a former legendary assassin who was killed by his own organization and was reincarnated as Lugh Tuatha Dé by the Goddess to fulfill a mission. Before his death, he was given the alias of "Allen Smith".

Background
He was an old man who had lived his life as the world's greatest assassin. Due to his advanced age, it was finally decided that he would be able to retire. However, the plane he was on was sabotaged and even his skills as the greatest assassin could not save him from its eventual destruction by the panicking military. When he died, he was awakened by a goddess who wanted to reincarnate him in a world of swords and magic because she needs his skill set to prevent the destruction of that world at the hands of the hero. Accepting this request, the protagonist awakens as Lugh Tuatha Dé and swears to finally live his life to its fullest as a human being and not as a tool, renouncing much of his prior identity in the proess.