RBK-061 Undercover investigator A requiem for the defeated Wedding bells that couldn't be rung Heaven Ruru

Carry out missions as long as you have life. You have to survive even if you are treated like a dog. That is the mission of an undercover investigator. Sakura accepts a proposal from her senior, Aoki, and decides to retire after a year. … This was supposed to be the last mission. However, this was the final mission for the two of them.