OFF is the third solo photobook released by Yaguchi Mari. The photobook was published by Wanibooks on June 12, 2004. The photography was done by Masashi Hashimoto. The photobook book came in three volumes total and also came with a poster.
The title of the photobook was named by Mari, herself. The title meaning On and Off the everyday Yaguchi Mari.
The photobook shows Mari being like a rainbow with smiles and laughter, her personality being the mood maker. The photobook also was said to be an expression of her charming mature side of her 21 year old life. It contains many pictures of her dressed maturely at various attractions, including her in a different variety of swimsuits which also included a fantastic cut and wearing a white dress in the forest.