Japanese music DVD Risako Sugaya / Risako Sugaya on Berryz Kobo Summer Concert Tour 2006 「 Summer Summer! ~ The Three Principles of Liking ~ 」
※Please note that product information is not in full comprehensive meaning because of the machine translation.
Japanese title: 邦楽DVD 菅谷梨沙子/菅谷梨沙子 on Berryz工房サマーコンサートツアー2006「夏夏!~あなたを好きになる三原則~」