I am obsessed with the man who was taken by my sister
姉に奪われたはずの恋人に執着されています
Hina Kato, who originally learned Braille for her blind father, finds herself chased by debts incurred by her twin sister, Yuna. To settle the score, she begins working as a live-in helper for Ritsu Kuramae—a visually impaired company president—while posing as her sister. Thanks to Hina’s patient and devoted support, the once-lonely Ritsu gradually opens his heart, and the two begin to fall for one another. However, after Ritsu undergoes surgery and regains his sight, her sister, Yuna, approaches him pretending to be Hina. After framing Hina and casting her out, Yuna successfully becomes engaged to Ritsu. A year later, a heartbroken Hina reappears before Ritsu—this time as the stepdaughter of Ritsu’s own father. Ritsu finds himself drawn to Hina, who has now become his new "younger sister." Meanwhile, Yuna lies about being pregnant, and Ritsu’s younger brother proposes to Hina in an attempt to shake Ritsu's resolve. Amidst this turmoil, Hina realizes the existence of a mastermind pulling all the strings from the shadows...