The Metropolitan Police Department is struggling to investigate a series of murders, yet Detective Isshiki is ordered to go home. Kiku of the General Affairs Division sends him to meet a certain sleuth—a shaggy-haired eccentric named Kamonohashi Ron.
#01   The Case of the Metropolitan Serial Drownings
الحلقة 01: قضية جرائم الغرق المتسلسلة بالعاصمة
Serienmorde in der Großstadt
Ahogamiento en serie en la capital
Ahogamiento en serie en la capital
NOYADES EN SÉRIE
AU CŒUR DE LA VILLE
Il caso degli annegamenti seriali in città
#01   Assassinatos em série no coração da cidade
Дело о серийных утоплениях в столице