Story about a 21-yr old female idol who passed away lately

Here is a story about a 21-year old female idol, Karin Maruyama.
She had been fighting with brain tumor and lung cancer over the years, but passed away on Friday, May 22.

She tweeted on May 21, "Good morning ! Good luck with your work and school, you guys. As I haven't slept well, am gonna sleep"
This was her last tweet.

When she was the 2nd grade at elementary school or 8 years old, she experienced the first surgery for brain tumor.
Since then, she repeatedly underwent surgical operations with her brain and did overcome tumor.

Her favorite artist was Morning Musume, one of the most famous female idol group in Japan, which gave her energy and high spirits always.

She won popularity during her high school years, and was elected as a Chairman of Student Council. She made a speech representing the whole graduates at graduation ceremony.

At an idol competition in 2012, "Miss iD2013", she was one of the semi-finalists, and made a debut in December as an idol singer.

In September, 2013, her first solo concert was held, and the second solo in December.

In October, 2014, it was announced that cancer had been found with her lung, and since then, she had been fighting to the last with the great help of her mom.

Her dream was to perform at Tokyo Idol Festival (TIF). It was February 28, 2015, when her first single "Eternal Summer" was released (I ordered her single CD via Amazon Japan at 0:47 am on May 25, but it seemed to be out of stock, and the estimated date of delivery is somewhere on June 2 - 23).

You can see her fighting spirit in a short documentary film aired in news show on TV.　
Rest in peace, Karin Maruyama.

Her official website
http://www.karin-maruyama.com/

Her official blog
http://ameblo.jp/pukarin-cho/

News show aired her documentary
https://www.youtube.com/watch?v=erb5Sp9-taA