My Partner is a Slime!? ~With the Strongest Partner, I'll Use the Strongest Magic to Rise in the World~ summary: Aibou wa Slime!? ~Saikyou no Aibou o Eta Boku ga Saikyou no Mahou o Tsukatte Nariagaru~ / 相棒はスライム!? ～最強の相棒を得た僕が最強の魔法を使って成り上がる～ Main character Zack has hit rock bottom. His family hates him, and his fiancee called off his engagement. A black object appears before him. It turns out to be Sura, a powerful black slime that speaks human! A great adventure, with the strongest slime! They're aiming to rule the continent!?