Majin Tantei Nougami Neuro

The Demon Neuro has a raging hunger for 'mysteries.' Being dissatisfied with his current regime in hell, he’s come into the mortal realm in order to satiate his ever-growing appetite. The murder case of a young girl’s father seems to be sufficiently enticing for the Demon’s needs.. But what else might happen between these two? Find out in this disturbingly good murder-mystery series.

Note: The original pilot one-shot is only included in the bunko version.

Volume 23 contains Rikon Choutei (Divorce Concilation) (離婚調停)
Ruca, trapped under a rock, is saved by a man dragging a large sword along the ground. Coming from Brazil to Niigata, she offers him a drink from a pokan juice. Why does he drag this large sword and how does the earth turning into a vast desert land relate to him?