The Hamutsun Serve is a Japan

Japan

Japan is an island nation in East Asia. Located in the Pacific Ocean, it lies to the east of the Sea of Japan, China, North Korea, South Korea and Russia, stretching from the Sea of Okhotsk in the north to the East China Sea and Taiwan in the south...

ese dance

Dance

Dance is an art form that generally refers to movement of the body, usually rhythmic and to music, used as a form of expression, social interaction or presented in a spiritual or performance setting....

 unit made up of 2 members, Rikiccho and Dah-yoshi.

Formed in 1999 by students of University of Fukushima, they gained reputation as performers of 'Animation Dance' through TV appearances in Japan. They have appeared in "4 Minutes

4 Minutes (Madonna song)

"4 Minutes" is a song by American singer-songwriter Madonna from her eleventh studio album Hard Candy. It was released as the lead single from the album on March 17, 2008, by Warner Bros. Records. The song's development was motivated by a sense of urgency to save the planet from destruction, and...

" video, as Madonna

Madonna (entertainer)

Madonna is an American singer-songwriter, actress and entrepreneur. Born in Bay City, Michigan, she moved to New York City in 1977 to pursue a career in modern dance. After performing in the music groups Breakfast Club and Emmy, she released her debut album in 1983...

 had previously noticed their performance on YouTube. Most recently, Rikiccho and Dah-Yoshi have collaborated with Madonna for her 2008-2009 Sticky & Sweet Tour

Sticky & Sweet Tour

The Sticky & Sweet Tour was the eighth worldwide concert tour by American singer Madonna to promote her eleventh studio album, Hard Candy. It began in August 2008 and was Madonna's first tour from her new recording and business deal with Live Nation. The tour was announced in February 2008, with...

: they made appearances during the "Rain

Rain (Madonna song)

"Rain" is a single by American singer-songwriter Madonna and was released on July 17, 1993 by Maverick Records. It was the fifth single release from her fifth studio album Erotica...

" interlude (which was mashed with the Eurythmics

Eurythmics

Eurythmics were a British pop rock duo, formed in 1980, currently disbanded, but known to reunite from time to time. Consisting of members Annie Lennox and David A...

' "Here Comes The Rain Again

Here Comes the Rain Again

"Here Comes the Rain Again" is a song by British pop duo Eurythmics. It was written by group members Annie Lennox and David A. Stewart and produced by Stewart. The song was released as the third single in the UK from the album Touch and in the United States as the first single. It became...

"), "Devil Wouldn't Recognize You", "Ray of Light

Ray of Light (song)

A high-speed electronic dance song, "Ray of Light" has received stylistic comparisons to rave, psychedelic and acid music. The track contains strong techno elements, as well as disco, trance and Eurodance influences, and it sees Madonna deepen her dance roots and go for a more electronic sound...

" and briefly during the bridge of "Hung Up

Hung Up

"Hung Up" is a song by American singer-songwriter Madonna. It was written and produced in collaboration with Stuart Price, and released as the first single from her tenth studio album, Confessions on a Dance Floor. Initially used in a number of television advertisements and serials, the song was...

".