OVA
Description
Kaname Arisugawa is a fifteen-year-old high school student who serves as a central supporting figure within her community. She is the younger daughter of the family that owns and operates a local bathhouse, the Kusatsu Onsen Fuyuin, where she lives and works alongside her older sister, Aya Arisugawa. Her background is deeply intertwined with this family business, as she effectively manages its day-to-day operations, a responsibility she took on during a difficult period for her family.

In terms of personality, Kaname is characterized by a bright, energetic, and outgoing nature. She possesses a notably direct and unfiltered communication style, often making bold jokes and teasing others without hesitation, particularly about subjects that others might find embarrassing or personal. This includes a penchant for risqué or dirty humor, a trait she shares with her mother. Despite this playful and sometimes mischievous exterior, Kaname demonstrates a significant degree of maturity and responsibility for her age. She is shrewd in business and often dispenses surprisingly perceptive and serious advice regarding love, relationships, and marriage, shifting easily from lighthearted teasing to insightful guidance.

Her primary motivations stem from a deep sense of loyalty and gratitude toward her family and close friends. She is driven to protect and manage the family bathhouse, which was saved from financial trouble with the help of Nasa Yuzaki. This event cemented her profound respect for Nasa, whom she calls her "senpai" and considers the most admirable person in the world, even viewing him as a father figure due to his long-standing support of her family. She is also motivated by a strong curiosity about Nasa's married life with Tsukasa Yuzaki, frequently asking them direct questions or attempting to observe the couple in an effort to understand their relationship.

Kaname's role in the story is multifaceted. She acts as a grounded and sensible pillar of support for the main characters, often providing them with advice and a place to stay, such as when she offers them lodging at the bathhouse after their apartment burns down. She serves as a source of comic relief through her unabashed teasing and nosy inquiries, while also acting as a catalyst for Nasa and Tsukasa to reflect on their relationship. She is an important connection to Nasa's past as his junior in middle school and represents a stable, reliable presence within the local neighborhood.

Her key relationships are central to her character. With Nasa Yuzaki, she is a devoted and teasing kohai who respects him deeply and often chides him to be a better husband. With Tsukasa Yuzaki, she develops a warm friendship, affectionately nicknaming her "Tsukassan" out of gratitude for saving Nasa's life. At home, she shares a loving yet sometimes bickering relationship with her older sister, Aya, whom she calls "Ayanee". While confident and mature in most aspects of her life, she admits to feeling like a child when around her own father.

Throughout the series, Kaname shows development primarily in her growing trust and affection for Tsukasa, moving from initial surprise about the marriage to becoming a close and supportive friend. Her management skills and business acumen also continue to be honed as she runs the bathhouse, balancing her duties with her life as a first-year high school student and a member of the art club.

Notable abilities include her exceptional skill in managing the family bathhouse, handling finances, and interacting with customers. She is highly responsible, organized, and possesses a strong business sense. Furthermore, she demonstrates a complete lack of shyness when performing her duties, famously having no qualms about entering the men's bath area to clean it, even when it is occupied. Her name, Kaname, is said to mean "pivot" or "cornerstone," which aptly reflects her function as a vital and stabilizing force in both her family’s business and the social circle surrounding the main couple.
Cast