Sora, an inexperienced demon, and Eril, a mischievous angel, continue their unconventional life together in the human world at the brothel called Paraíso. Their days are a chaotic blend of comfort and tumult until a bizarre phenomenon disrupts their routine. One morning, Eril wakes up to find that his demon lover has transformed into a baby. This sudden change is explained as a peculiar physiological cycle specific to demons, forcing the couple and their friends to adapt to Sora’s new, vulnerable state. Eril must now navigate the challenges of sudden parenthood while waiting for Sora to return to his adult form, a journey that tests their relationship in unexpected ways.

The story revolves around the starkly contrasting pair. Sora is the naive and initially unworldly demon who ran away from his own realm. Eril is the cunning and possessive angel who runs the Paraíso and essentially owns Sora. Their dynamic deepens as Eril reveals more protective and tender instincts. A key supporting character is Düla, whose overprotective nature toward the infant Sora provides much of the volume’s humor. Another figure, Amo, assists Eril in learning about family life and parenting, offering a glimpse into a more domestic existence.

The narrative arc focuses on the consequences of Sora’s age regression. While the premise allows for adorable visuals and humorous misunderstandings regarding childcare, it also prompts Eril to reflect seriously on their relationship and his own past, uncovering fragments of his history. The story emphasizes emotional distance and loneliness, as Eril must cope with the absence of his partner’s adult consciousness even while caring for his physical form. Despite the fantastical situation, the volume avoids uncomfortable scenarios, instead using the premise to explore themes of memory, the passage of time, and the meaning of family.