Galism: Renai Joutou 3 Shimai

When their adventurist parents depart on yet another journey, the three Ugajin sisters are left behind to manage the household entirely on their own. Rather than feeling abandoned, the siblings embrace the situation wholeheartedly, transforming their empty home into a personal paradise of unrestricted freedom. Without parental supervision to dictate their daily routines, they relish every moment of their carefree and independent lifestyle. However, this idyllic domestic bliss is soon interrupted by an unexpected obligation. The financial backer who funds their parents' adventurous expeditions approaches the sisters with a peculiar request that threatens to complicate their relaxed existence. This mysterious benefactor tasks them with a covert mission: they must safeguard the peace at Manten Academy, operating quietly from the shadows to protect the school from unseen threats. Now caught between the comforts of their unsupervised home life and the weight of their new secret responsibility, the three sisters must balance their desire for freedom with the demands placed upon them. As they step into the role of hidden guardians at Manten Academy, the Ugajin sisters discover that maintaining order requires far more effort than simply enjoying their time alone. Their once-simple paradise gradually evolves into a stage for duty, secrecy, and unexpected challenges.