Library

Four men with weird nicknames gathered in a karaoke box in a bustling city. The four of them all had targets they wanted to get rid of. In order to make the case seem motiveless, they decided to swap killings and randomly draw playing cards to determine their targets and the order of the murders. The seemingly meticulous criminal plan made an inconspicuous mistake. The father-and-son duo of Hotsuki Police and Rintaro seized the opportunity to pursue the murderer! Quadruple exchange of kills, full of difficulties. Father and son detective partners, chasing the murderer with quick wits! A wonderful battle of wits, numerous misdirections, and a reading experience like turning over playing cards.