Rooster Fighter manga volume 4 features story and art by Shu Sakuratani.

Keiji's rescue of an imperiled town has inspired all who witnessed his heroic feat. Keiji’s, Elizabeth’s, and Chicken Little’s fame has begun to spread, even among other birds. When a group of pigeons challenges the pride of chickens everywhere, there’s only one way to defend it - a group date! But trouble follows Keiji everywhere he goes, and the appearance of a mysterious demon and a rooster claiming to be Keiji’s half-brother can only complicate things...

Rooster Fighter manga volume 5 features story and art by Shu Sakuratani.

Morio, the kind demon thought to have died in the flood, reappears and attacks a town near where the devils may be hiding. Keiji and his comrades investigate but with the sudden appearance of his half brother, Keisuke, Keiji is forced to confront his troubled history with their father. Despite not wanting anything to do with his old man, Keiji decided to help Keisuke rescue their father from the devils. And in this desparate battle, Chicken Little must face her fears to save everyone!

Rooster Fighter manga volume 6 features story and art by Shu Sakuratani.

To save Morio from the demon controlling him, Chicken Little has found her courage and gone inside Morio's head! She confronts the creature that has attached itself to Morio's brain, but the parasite may get the better of Chicken Little as well! Meanwhile, Keiji, Keisuke, and Elizabeth battle a seemingly unstoppable devil and his master. When even Keiji goes down, Keisuke must awaken the Righteous Egg within his heart to achieve victory. But will this power be enough?