Half a year has passed since the Dollars meeting and Ikebukuro seems to have returned to normal. But underground, the Yellow Scarves and the Slasher are becoming increasingly active. Darkness approaches, ready to destroy the days of peace.

Anri notices something is wrong with Masaomi, and takes action to find out what it is. Elsewhere, a gang-war breaks out between the Yellow Scarves and the Dollars over the Slasher’s identity. The standoff grows as Mikado’s desire to stop it is ignored.

The idol Ruri Hijiribe and actor Yuhei Hanejima; two people who, despite being hugely popular, remain a mystery. A chance meeting gives them reason to reveal their secrets to one another. Meanwhile, the various situations in Ikebukuro begin to intersect.

While transporting some mysterious luggage, Celty attempts to escape the biker gangs out to claim the 10 million bounty that’s been placed on her. Caught up in the chaos, Mairu and Kururi join with Kyohei and the others.