Kuro no Shoukanshi

The story

Synopsis

Kelvin sacrifices parts of his past life to gain exceptional summoning powers and an elite S class rank, trading memory for strength. As part of the rebirth bargain, a goddess named Melfina offers to accompany him, and Kelvin impulsively picks her as his companion, hoping his feelings will survive the memory loss. Guided by Melfina, he must grow stronger by…