Romeo is a kindhearted and courageous boy living with his family in a small village in Switzerland. Unfortunately, Romeo becomes the interest of a man named Luini, known as The God of Death, who is infamous for buying children and selling them as chimney sweeps in Milan. While visiting the village, Luini burns down Romeo's family cornfield in an attempt to have Romeo as his own. With the cornfield gone and his father sustaining a head injury trying to put out the fire, Romeo bravely sells himself to the God of Death in order to help his family afford a doctor. On his way to Milan, Romeo meets a boy named Alfredo Martini and they quickly become friends. Just as Alfredo is sold to a different master, the two boys swear eternal friendship and vow to meet again. As a chimney sweep, Romeo faces many hardships and abuse, especially from his master's family and a gang known as the Wolf Pack. But after reuniting with Alfredo, the two form a fraternity of chimney sweeps called The Black Brothers, who will learn to fight against the Wolf Pack and help each other in times of need.

Three years ago, the long war between the Royal Empire and the Republic of Frost came to an end. With both nations a long way from recovery, a passionate young woman named Alice L. Malvin leads the Pumpkin Scissors, a unit of the imperial army specializing in war relief. During a mission to assist a village occupied by renegade soldiers, Alice meets Randal Oland, a scarred former soldier with a sordid past and kind heart. Encouraged by the efforts of the Pumpkin Scissors, he joins the team on their mission. During the assault, however, Randal enters a trance-like state prompted by a mysterious blue lantern. As a result, he acquires monstrous strength and decimates the enemy forces. Despite having witnessed Randal's disturbing transformation, Alice invites him to join her squandrant, confident that his gentle nature will prevail and make him a perfect fit for the Pumpkin Scissors.

Akari Mizunashi dreams of life after attaining her goal of becoming a Prima Undine, but upon waking realizes that she might not actually have the confidence to run Aria Company on her own. Wary of the future, she seeks advice from her mentor Alicia Florence—one of the three great Water Fairies of Neo-Venezia. Much to Akari's surprise, Alicia reveals her own struggles of the past, but also shares the steps she took in overcoming her self-doubt of running the company and taking on an apprentice. Finding solace in her teacher's words, Akari prepares to embrace whatever trials she must overcome on her path toward achieving her dreams.

In a society of people with animal characteristics, Belle Lablac stands out as the only person with no animal features at all. Curious of her origins, Belle leaves her hometown and heads to the city of Schubertland to be awarded the status of Nomad by Schubertland's ruler, King Rawhide. Through the journey, she is trained by the legendary swordsman Sian Lablac. Unfortunately for Belle, through a complication, she is unable to hurt others with her legendary sword Runding. The only choice to best her opponents in battle now is to break their swords, which is heavily looked down upon. Though ostracized for her appearance and hated for her disregard of societal norms, Belle stays resolute as she sets off on a perilous journey to find her rightful place in the world.