Domestic na Kanojo follows Natsuo Fujii, a high schooler who harbors feelings for his teacher. His life spirals when his father remarries, bringing two sisters—Hina and Rui Tachibana—into his home. Torn between desire, family duty, and heartbreak, he becomes entangled in a complicated romance with both sisters.

Domestic na Kanojo follows Natsuo Fujii, a high schooler who harbors feelings for his teacher. His life spirals when his father remarries, bringing two sisters—Hina and Rui Tachibana—into his home. Torn between desire, family duty, and heartbreak, he becomes entangled in a complicated romance with both sisters.