Akina Orifushi occupies the role of the second eldest among three sisters in the Orifushi household. Following their parents’ passing, the eldest sibling, Natsumi, oversees the family’s Min-Min ice cream business. Renowned for academic prowess, athletic talent, and domestic competence, Akina thrives as a celebrated honor student, balancing a cheerful exterior with undercurrents of possessiveness, particularly regarding the protagonist, a childhood friend. Their bond intensifies after a volcanic eruption displaces him to their home, where her overt affection contrasts her sisters’ reserved or eccentric demeanors.

She diligently supports Min-Min during its rivalry with a competing shop, leveraging her diligence and loyalty to protect its legacy. While consistently kind, her jealousy surfaces when the protagonist engages with others, revealing vulnerabilities beneath her composed facade. Across the original visual novel, sequel, and OVA adaptations, her core narrative remains steadfast—the sequel amplifies secondary roles without altering her interpersonal dynamics or central romantic subplot. A subsequent compilation film incorporates brief new scenes but preserves her established familial and emotional arcs.