Renai Kinshi Library

Murofuchi, a book lover who works as a librarian at a small local library, is terrible at interacting with people. Yet, a directive from the main branch forces him to host a story time session for children! While reluctantly practicing his reading aloud to a tank of Japanese rice fish in the empty library, a handsome office worker overhears him and ask, "Won't you let me be your practice partner?" Murofuchi is railroaded into agreeing. Though he's nervous about practicing alone with the man, it turns out to be someone he harbored a secret crush on back in high school—!?

(Source: Kaiohsha, translated)