Two years after the events in Libracity. Detective Sonia, who had been continuously searching for the whereabouts of the missing Bem and other humanoid monsters, visits a pharmaceutical company called "Draco Chemical" based on a witness report. There, she encounters a stronger and more mature Belo, who continues to fight evil alone; Bella, who rejects conflict and wishes to live as an ordinary girl; and a man named "Belm," who bears a striking resemblance to Bem... Since coming into contact with Sonia, who calls him Bem, Belm has been tormented by nightmares every night. A warm family life surrounded by his beloved wife and children. The usual interactions with the kind townspeople. Trustworthy colleagues and fulfilling work. Such an ordinary, unchanging daily life for him begins to crumble with a resounding crash— "Who in the world am I...?" Their destinies diverge, intertwine, and eventually lead to the secret behind the birth of the humanoid monsters. The answer to a long-held dream. What future will the humanoid monsters choose...!?