Shizuka Kawai

Shizuka Kawai (川井 静香, Kawai Shizuka) is the little sister of Katsuya Jonouchi, separated from him when their parents divorced and her mother took custody of her. When Shizuka was diagnosed with the steady onset of blindness, Jonouchi entered the Duelist Kingdom tournament and successfully obtained the prize money to secure the operation that would save her sight. Shizuka underwent the operation in the early days of the Battle City tournament, and was looked after by Hiroto Honda (who developed a crush on her) while Joey dueled. Unfortunately, Joey fell under the mental control of the evil Marik Ishtar and nearly died when he was pulled under the ocean during a deadly duel with Yugi, but was saved when Shizuka removed her bandages and dived into the water to save him. Joining Jonouchi and his friends in the final leg of the tournament, Shizuka became friendly with Mai Kujaku, who she looked up to, and Ryuuji Otogi, who vied with Honda for her affections.

For Shizuka’s brief appearance in the Toei anime, she was established as simply being ill, rather than going blind. Her doctor, Kekeru Goyu, slacked off on her care, causing Nurse Miyuki Sakurai to get angry at him. After he fires Miyuki for hitting him, Yami Yugi defeated Dr. Goyu in a Shadow Game.

The Duel Monsters anime gave Shizuka a chance to duel when, in the midst of the Battle City tournament, she and the rest of the cast where trapped in a virtual reality world by Noah Kaiba. Facing off against the fourth member of the Kaiba Corporation’s “Big Five” alongside Honda and Ryuuji, Shizuka employed a deck consisting of female monsters, such as Saint Joan and the Forgiving Maiden, but proved less than skillful at the game.

Source: Wikipedia