Background: Gakuto Oshiro (Da Cheng  gakuto, Oshiro Gakuto, born July 4, 1973), better known by his mononymous stage name Gackt, is a Japanese musician, singer, songwriter, record producer and actor. He has been active since 1993, first as the frontman of the short-lived independent band Cains:Feel, and then for the now defunct visual kei rock band Malice Mizer, before starting his solo career in 1999. He has released nine studio albums and, with forty-eight singles released, holds the male soloist record for most top ten consecutive singles in Japanese music history. His single "Returner (Yami no Shuen)", released on June 20, 2007, was his first single to reach the number one spot on the Oricon charts.
Context: In 2006, he continued his tour with a concert on January 14, in Korea, at Fencing Stadium in Korean Olympic Park, which was his first Asian solo concert. In the same month was released the twenty-fourth single, "Redemption", which included theme songs of the Square Enix game, Dirge of Cerberus: Final Fantasy VII. On February 28, he appeared at the graduation of the Maiko High School in Hyogo Prefecture. Besides the words of encouragement, he performed an unreleased song especially written for the graduation. It was released the following year on February 7, as "No ni Saku Hana no Yo ni". Since then he appeared in several graduation ceremonies.  In August, at an Otakon conference, it was publicly announced that he would form a supergroup, S.K.I.N., with famous Japanese metal band X Japan co-founder Yoshiki, Luna Sea, and X Japan guitarist Sugizo, and guitarist Miyavi. Although there were high expectations for the group, since their debut performance on June 29, 2007, at the Anime Expo in Long Beach, California, no further activities were announced. On December 24, he went on a small nationwide fanclub tour "D.r.u.g. Party", which was also continued with four concerts in Korea and Taiwan.  In 2007, in January he played the warlord Uesugi Kenshin in the NHK Taiga drama Furin Kazan. On June 20, Gackt released his twenty-seventh single, "Returner (Yami no Shuen)", which was the first in his career (both solo and as a member of a band) to reach the number one spot on the Oricon charts. On August 23, Gackt was invited to perform his Furin Kazan television role at Joetsu city's traditional, 82nd Kenshin Festival, with approximately 203,000 visitors. In October, he held a press conference at the Apple Store in Ginza, Tokyo, where besides advertising the first iPhone, Gackt announced he would have his entire back catalog, with new previously toured, live song recordings, put up on the iTunes Store, as well as that "The Greatest Filmography" would be released on October 9 in the United States and Canada, while his album Diabolos was released on October 26 in eighteen European countries. On November 17 and 27, he performed at M.net/Km Music Video Festival in Korea as the special guest star, and he appeared and performed at the "2007 Japan-China Cultural Exchange Grand Concert Final" in Beijing. In Beijing he sang "Junigatsu no Love Song" in Japanese, Korean, and Mandarin. On December 10, he appeared at the China Fashion Awards in Beijing, where was given the award "Japanese Artist of the Year". On December 19, Gackt released a compilation album, 0079-0088, including songs used in the Gundam franchise. Gackt also performed on the 58th Kohaku Uta Gassen.  The year 2007 also saw the creation of the "Save our Dears" charity to help the victims of the powerful Chuetsu offshore earthquake that struck the Niigata Prefecture. To raise funds for this charity, Gackt designed a keychain and bracelets, in addition, the charity also featured two Orico UPty MasterCard credit cards. Gackt's fan club Dears, raised Y=2,000,000 (US$26,041) which Gackt donated to the Joetsu at the 83rd Kenshin Festival in 2008.
Question: What did they do in 2007?

Answer:
In 2007, in January he played the warlord Uesugi Kenshin in the NHK Taiga drama Furin Kazan.