Detectives These Days Are Crazy! Volume 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 (her youth) is high schooler Mashiro, as the pair lead a pleasant private-eye life. Then one day, the appearance of the mysterious agent Azuha Hoshino livens up the office all the more!