By the Grace of the Gods (Manga) 08

Slime's up for one recently deceased middle-aged businessman! When the gods reincarnate him in another world as a boy with magical powers, he discovers that magically-tamed slime are an untapped natural resource! Ryoma’s laundry business is now almost too successful, having even attracted thieves! While considering opening a branch shop in another location, Ryoma can’t help but be concerned about finding employees he can trust. A chance encounter with Jeff provides an unexpectedly wonderful solution. The Duke’s family will soon be leaving Gimul, but one last opportunity to create a precious memory with Ryoma remains. Elia and Ryoma both take on the challenge of forming a contract with Limour birds, but the beautiful birds can only be tamed with a musical performance…