Kazusa Sugimoto, second eldest of the Sugimoto siblings, pursued both education and career at Fujigaya Girls’ Academy—first as a student, then as an art teacher. During her tenure there, she formed a romantic bond with fellow faculty member Masanori Kagami, culminating in marriage.

Gentle yet reserved, Kazusa navigates social exchanges with calm politeness. Her introspective nature draws her to spend hours immersed in painting, while her dual roles as artist and educator reveal a steadfast, understated commitment to her craft.

Her union with Kagami profoundly shapes her younger sister Yasuko’s emotional path. Yasuko, once harboring unrequited feelings for Kagami, severed a prior relationship and departed for studies abroad in the aftermath.

Upon marrying, Kazusa stepped away from teaching, cementing her role as the Sugimoto family’s stabilizing anchor despite lingering complexities in the sisters’ bond. Her marriage, marked by quiet constancy, stands as a counterpoint to other characters’ turbulent romantic arcs.

Deeply rooted in Fujigaya’s cultural fabric, she forged connections with colleagues like Hinako Yamashina. Through artistic passion and understated resilience, Kazusa exerts a quietly influential presence within the narrative’s social tapestry.