First reports said that Kim Jong-un attended the private English-language International School in Gümligen in Switzerland under the name "Chol-pak" or "Pak-chol" from 1993 to 1998. He was described as shy, a good student who got along well with his classmates and was a basketball fan. He was chaperoned by an older student, who was thought to be his bodyguard. However, it was later suggested that the student at the Gümligen was not Kim Jong-un, but his elder brother Kim Jong-chul.Later, it was reported that Kim Jong-un attended the Liebefeld Steinhölzli state school in Köniz near Bern under the name "Pak-un" or "Un-pak" from 1998 until 2000 as the son of an employee of the North Korean embassy in Bern. Authorities confirmed that a North Korean student from North Korea attended the school from 1998 to 2000. Pak-un first attended a special class for foreign-language children and later attended the regular classes of the 6th, 7th, 8th, and part of the final 9th year, leaving the school abruptly in the autumn of 2000. He was described as a well-integrated and ambitious student who liked to play basketball. However, his grades and attendance rating are reported to have been poor. The ambassador of North Korea in Switzerland, Ri Chol, had a close relationship with him and acted as a mentor. One of Pak-un's classmates told reporters that he had told him that he was the son of the leader of North Korea. According to some reports, Kim was described by classmates as a shy child who was awkward with girls and indifferent to political issues, but who distinguished himself in sports and had a fascination with the American National Basketball Association and Michael Jordan. One friend claimed that he had been shown pictures of Pak-un with Kobe Bryant and Toni Kukoč.In April 2012, new documents came to light indicating that Kim Jong-un had lived in Switzerland since 1991 or 1992, earlier than previously thought.The Laboratory of Anatomic Anthropology at the University of Lyon, France, compared the picture of Pak-un taken at the Liebefeld Steinhölzli school in 1999 with a picture of Kim Jong-un from 2012 and concluded that the faces show a conformity of 95%, suggesting that it is most likely that they are the same person.The Washington Post reported in 2009 that Kim Jong-un's school friends recalled he "spent hours doing meticulous pencil drawings of Chicago Bulls superstar Michael Jordan". He was obsessed with basketball and computer games.Most analysts agree that Kim Jong-un attended Kim Il-sung University, a leading officer-training school in Pyongyang, from 2002 to 2007. Kim obtained two degrees, one in physics at Kim Il-sung University, and another as an Army officer at the Kim Il-sung Military University.In late February 2018, Reuters reported that Kim and his father had used forged passports—supposedly issued by Brazil and dated 26 February 1996—to apply for visas in various countries. Both 10-year passports carry a stamp saying "Embassy of Brazil in Prague". Kim Jong-un's passport records the name "Josef Pwag" and a date of birth of 1 February 1983.For many years, only one confirmed photograph of him was known to exist outside North Korea, apparently taken in the mid-1990s, when he was eleven. Occasionally other supposed images of him surfaced but were often disputed. It was only in June 2010, shortly before he was given official posts and publicly introduced to the North Korean people, that more pictures were released of Kim, taken when he was attending school in Switzerland. The first official image of him as an adult was a group photograph released on 30 September 2010, at the end of the party conference that effectively anointed him, in which he is seated in the front row, two places from his father. This was followed by newsreel footage of him attending the conference.

Question: How was Kim Jong-un described ?
Answer: shy