One of her alcohol-related incidents took place in August 2000, when she was arrested together with another fashion model, allegedly her friend Anna Tsuchiya, after running full-naked on Omiya's mainstreet and in a public high school filled with hundreds of students, while under the influence of a large amount of alcohol.
[3] TV Saitama's News 930 channel reported this incident, but sank their names for a voluntary restraint related to the Youth Act law, describing Yuhnagi as a "rampaging young girl with dyed, pink-colored hair and some heavy accent, a professional model".
In late 2000, as a high-featured teenage model with a rapidly rising popularity, she appeared on several television programs which included TV Asahi's Tonight 2 and TBS's Wonderful.
On January 4, 2001 after drinking too much Shochu, Vodka and Dom Perignon, Yuhnagi slept in a park located near her condominium and was frozen, eventually died of hypothermia, at the age of 17.
Near the end of 2010, according to Natsuki Kato's column on the Nikkei BP magazine, several Kyushu-born fashion models, including Rena Takeshita, paid tribute to Yuhnagi with a special banquet in Otsu.