Records of Remembrance?

Summoned into an alternate world as an infant, the newly born Kenji Izanagi doesnt remember much. After spending several days asking the goddess questions and his pondering his purpose in this new world, the old Kenji asked to forget his previous life! Now Kenji is reborn, has no idea about his world, has no idea about his previous life, what is his purpose? The only thing remaining in his memory are feelings, the feeling of resentment and hate for his past self for leaving him in the dark.