Watashi ni dake Tenparu Joushi no Hanashi

Hiyakawa-san’s handsome but perpetually frowning face strikes fear into the hearts of his co-workers. But around Tetsuhara Miori, his façade slips—often getting clumsy, careless, and blurting out his true thoughts. Now she’s dealing with a mumbling, bumbling, blushing boss! Awkward and sweet days unfold when you have a boss this flustered in this workplace romantic comedy!

(Source: Manga UP! Global)