Black Summoner

Kelvin, a young man, undergoes a process to reincarnate in another world, sacrificing select memories in exchange for enhanced abilities and an S-class summoner title. He chooses Melfina, a goddess who facilitated his rebirth, as his companion, hoping their past connection will remain intact despite lost memories. Kelvin's primary goal is to summon Melfina's physical form, which requires accumulating mana points by leveling up and forming contracts with powerful allies.