Being Low as Dirt, Taking What's Important From Me

The hit song by the popular music group TUYU now has a manga adaptation! "Protect that girl from an untimely death." That is the mission given to me and my senpai by the heavenly realm. What kind of a job is it... to come to Earth to protect some stupid human? She's just an ordinary girl...? Why do we, heavenly angels, have to do such a thing! Senpai must have been thinking that way, too, or so I thought—? (Source: Kadokawa, translated)