Shenwei Renlei De Wo Que Chengwei Guaiyi Zhi Zhu

The protagonist Chang Zaikun has been able to see terrifying "weird" creatures ever since he was a child, but he was never afraid, rather deeply attracted by the creatures and fell in love with them from the bottom of his heart. One day in high school, he accidentally met a weird administrator and received an invitation: to manage a "prison" inhabited by the creatures, and to find those who were lost in the world!

(Source: Bilibili, translated)