Singer Kim Jeong-hoon's new single has debuted at No. 5 on Japan's music chart on the first day of its release, according to his agency on Thursday.
Kim's eighth single "Rainy Flash," which went on sale the previous day in time with the singer's birthday, ranked fifth on Japan's daily Oricon chart, Mersenne said in a press release.
"It is amazing to see the singer do so well even though the singer is currently not performing due to serving Korea's mandatory military service," an official at Mersenne was quoted as saying.
The 30-year-old singer recorded the album before enlisting in the army in April last year. Kim's second single will be released in April and the full-length album in October.
His first mini-album "In Your Eyes" was released in Korea last September and in Japan mid-December. It will be sold in countries throughout Asia in February.
The singer, who debuted in 2000 with the now-disbanded duo group UN, has also expanded his career into acting. Of the several dramas that he has appeared in, he is best known for his role in MBC hit TV series "Goong".