|Released||August 29, 2007|
|Cooperation with||Up-Front Agency|
Yurina (友理奈) is Kumai Yurina's 1st photobook. It was released on August 29, 2007 by Kids Net. The photography was done by Kono Hideki. A special edition DVD of the photobook's making of was released on October 11, 2007.
The title of the photobook was named after her real name, Yurina.
The photobook shows off Kumai's dazzling smile in sunshiny environments. The theme of the photobook was to show the adventures of Yurina's 14 years living. The photobook shows Kumai doing many summer fun activities which include her riding bikes, hiking in different cute outfits and going to the pool or ocean in a variety of swimsuits It also shows her wearing her summer kimono and school uniform.