All unintentional coincidences are inevitable without prior arrangement.

The transformation of the tsundere bottom and the scheming top begins, ambiguous madness, entangled obsessions, and chaotic love.

Dome loves his personal space until a dark, tall and handsome man threatened to cut his ball.

Each case is related to something special. Every trace breaks off somewhere without giving the detectives any logical solution. Everyone is different and understands the concept of serial killing differently. Some only catch evidence, others are intuitive and accurate. There is one case and there are countless detectives. What will each of them have to go through to get to the very end of the serial murder path? Will any of them find a solution?

Clearly they are brothers, but they are as different as night and day. The elder brother shines like a star in the night sky, while the younger brother is like dirt and dust, not worth looking at.