Dekisokonai to Yobareta Moto Eiyuu wa, Jikka Kara Tsuihousareta Node Suki Katte ni Ikiru Koto ni Shita

A boy named Allen who was called not to be able to get the gift of God's bounty. But his true identity was a former hero with memories and powers of previous life!? Fortunately to have been expelled from his duke's family, Allen was trying to start a free-spirited journey, but he would encounter an assassination attempt by a former fiance...! ?