Yuji Ueno, a former Sogetsu artist now working on his own, has developed a flower concept that he calls Hanaike. He works with live performances creating poetic simplified arrangements with very little plant materials. Note that the to words hana and ike are the same as in ikebana, just in reversed order.
Recently Yuji Ueno has also been involved in "marginal art" events in the Echigo-Tsumari region, creating new artworks on his expeditions and encounters with local villagers.
Have a look at his inspiring work on this video from Panorama: