Hiru wa Bait Leader, Yoru wa Spy no Oji-san ga JK ni Utagawareru Hanashi

A story about the manager of a convenience store during the day, who works as a spy at night, suspected by the JK who works with him... or at least, that's what he mistakenly believes. (Source: NicoNico Seiga, translated) Note: Chapter count includes one bonus chapter.