Lamuya

Aria, a young noblewoman, was locked away in the attic. Her life was on the verge of ending... but in that very moment, she regained memories of her past life! Nagisa, once an ordinary office worker, had been reincarnated as Aria after receiving an all-powerful skill from god. Her mission? To live a happy life as Aria. To achieve that, she first had to reclaim the fortune stolen by the family that had driven her into this plight and escape the estate! With that vow, Aria set out to turn her tragic fate around!!Original Web Novel

Joshua is an overworked, underpaid production mage for the prestigious Knights of Schwarz order. When the order’s corrupted commander dismisses Joshua from his toxic job, he embarks on a quest for a new purpose. Along the way, Joshua's path intertwines with Illya, the princess of a Demon tribe, whom he saves from hunters targeting “demi-humans.” As thanks, he’s welcomed to the Demon tribe village. Witnessing their torment by the Demon King's army and slave traders, Joshua resolves to employ his production magic to aid them. Get ready for a fantasy where the greatest production mage and his friends work together to craft a splendid nation! (Manga UP! Global)

Main character Zack has hit rock bottom. His family hates him, and his fiancée called off his engagement. A black object appears before him. It turns out to be Sura, a powerful black slime that speaks human!