One Peace Books Detectives These Days Are Crazy! Vol. 3

Having entered his thirties, former great detective Keiichiro Nagumo has lost every last glimmer of his former shine. Supporting him with a ray of light (and youth) is high schooler Mashiro, and the pair lead a pleasant private-eye life. But the appearance of mysterious agent Azuha Hoshino livens up the office even more.