Yokai Rental Shop

Yokai Rental Shop (妖飼兄さん, "Youkai Nii-san") is a manga by Shin Mashiba. It launched in the GFantasy manga magazine in June 2015, and ended in July 2017. It is complete in four volumes. Seven Seas has licensed it for English release.

Plot
When Hiiragi learns that he has a half-brother he’s never met, he decides to meet him but is shocked by what he discovers. Hiiragi’s newfound older brother is inexplicably covered in bandages from head to toe and owns of a mysterious pet shop that sells rare animals. And this strange place hides a shocking secret: customers in-the-know can rent out yokai to perform supernatural deeds, as long as they’re willing to forge a contract written in blood.