Hakata Tonkotsu Ramens (博多豚骨ラーメンズ) is the first light novel of the series. It was published on February 25, 2014.
Fukuoka is a peaceful city at first glance, but crime runs amuck in its under workings. At the prime of the mayoral election an investigation is taking place into the mayor's connections and the series of murders. The private detective Zenji Banba takes the case involving the death of a police detective investigating into mayor Harada. Meanwhile the professional killer Xianming Lin is caught in a dispute with his employees, the Kakyu Association. And the new employee of Murder Inc., Saitoh, is sent to the city of killers in the midst of all the chaos. All these characters' stories will be tangled together by the political conspiracy.
|Prologue||Seasonal Opening Ceremony|
|11||Extra Eleventh Inning|