Wishma Rathnayake moved to Narita, Japan on a student visa in 2017.

Her dream to teach English in Japan ended with a lesson for the country

Updated 7:28 PM ET, Sat December 4, 2021

Tokyo (CNN)As a child, Wishma Rathnayake was fascinated with "Oshin," a popular 1980s' television drama about a young girl who rises from poverty to head a Japanese supermarket chain.

Urged by her father to emulate her hero, Rathnayake started learning Japanese with a dream of one day moving to Japan from the small Sri Lankan town of Gampaha, northeast of Colombo.
When her father died, the university graduate convinced her mother she could earn enough money working abroad as an English teacher to fund her retirement.
The family remortgaged their home, and in 2017, Rathnayake moved to Narita, on the outskirts of Tokyo, on a student visa.
Within three years, she was dead.
After overstaying her visa, Rathnayake was detained in Japan's immigration system, where she died on March 6, 2021, at the age of 33.
Rathnayake's case made headlines in Japan and fueled debate over the treatment of foreigners in the country, where 27 immigration detainees have died since 1997, according to the Japan Lawyers Network for Refugees.
Her death has also exposed the lack of transparency in a system where people can languish for years with no prospect of release -- a system that her sisters are now campaigning to change.
Wishma Rathnayake (center) with her younger sisters, Poornima Rathnayake (left) and Wayomi Rathnayake (right).

Chasing a dream

Rathnayake was 29 when she arrived in Narita, and her Facebook feed soon filled with images of tourist sites and new friends.
From Sri Lanka, her younger sisters, Wayomi and Poornima, heard she was attending language classes and seemed to be happy. "She never told us or gave us a sign that things weren't going well for her," said Wayomi Rathnayake, now 29.
What her sisters didn't know was that Rathnayake stopped attending language classes in May 2018 and was later expelled. The same month, she started working in a factory before claiming asylum that September. Her claim was rejected in January 2019, and from then on she was considered an illegal immigrant.
Phone calls home became less frequent, and in August 2020, it became clear why. That month, Rathnayake approached a police station in Shizuoka prefecture, far from home, seeking help to leave her partner.
Rathnayake told the officers her visa had expired and she wanted to go to the Nagoya Regional Immigration Bureau but didn't have enough money to get there, according to Yasunori Matsui, the director of START, a non-profit that helps foreign nationals detained in Japan.
People opposing the revision of Japan's immigration control and refugee recognition law march in Tokyo on May 16, 2021.
Initially, Rathnayake agreed to return to Sri Lanka, but she changed her mind after her partner wrote two letters threatening to track her down and punish her if she returned home, according to Matsui.
"She believed she would be killed by him," said Matsui, who met Rathnayake at the immigration bureau in December 2020.
The first her sisters knew she was in trouble was in March 2021, when the Sri Lankan Embassy in Tokyo called to say she was dead.
Rathnayake's family asked for a report and photographic evidence, but their requests went unanswered, and in May her younger sisters traveled to Japan to seek the truth.

"Her skin was wrinkled like an old person and it was stuck firmly to her bones"Poornima RathnayakeWishma's sister

When they arrived, they saw Rathnayake in a funeral casket in Nagoya. "She looked so different, so weak and unrecognizable. Her skin was wrinkled like an old person, and it was stuck firmly to her bones," said Poornima Rathnayake, 27.
During seven months in detention, she'd lost 20 kilograms (44 pounds).
Her sisters wanted to know why.
Most of all, they wanted to see closed-circuit video of her final weeks in custody.
But authorities refused access.

A broken system

For three months, the sisters and their legal team rallied for answers, meeting with officials and demanding the release of the video.
Their calls were echoed by supporters and some politicians advocating for stronger rights for foreign nationals in Japan, and earlier this year a decision on whether to release the footage became a major focus of debate in the country's Parliament.
At the time, Japanese lawmakers were debating a bill that would have revised the rules on governing foreigners in detention, including provisions to deport people after two failed bids for refugee protection.
The purpose of the bill was to reduce the number of migrants in Japanese detention facilities, which had climbed to 1,054 in 2020, according to data from the Immigration Agency of Japan.
But rights groups, including a group of United Nations experts, said elements of the bill threatened to breach international human rights standards. For example, they said the clause on deportation could violate the principle of non-refoulement by forcing people to countries where they fear persecution.
"The controversy surrounding the bill helped build a national debate around her death and the issue of how foreigners are treated in Japan," said Kosuke Oie, an immigration lawyer supporting her family.
The bill was eventually scrapped.
Japan has traditionally had a low intake of migrants, though in recent years it has begun accepting more foreign workers.
In 2018, Japanese lawmakers approved a policy change proposed by former Prime Minister Shinzo Abe that created new visa categories to allow an estimated 340,000 foreign workers to take high-skilled and low-wage jobs.
And in a major shift last month, the Japanese government said it was c