Like all of the characters in this series, Shitou Hibiki (仕藤響) has the first kanji in his family name representing his “ideology”. Here, shi (仕) means work!
Hibiki is a university student who has worked in Cafe Nanairo for 2 years, and described by the manager as “very reliable.”
Chapter 8 in no sooner than October 23rd, 5 P.M. JST.
I realized that in this manga the author makes sure the MC never say a bad word in their arguments or banter it's all from her, and he only comments on them without a single bad word like she does