Japanese book titled "自由戀愛" (Jiyuu Ren'ai), which translates to "Free Love" or "Love Affair," written by 岩井志麻子 (Shimako Iwai). It is part of the Chuko Bunko (中公文庫) series and published by Chuokoron-Shinsha (中央公論新社). The text "3/05 Venice から。" likely indicates a date and location associated with the book's creation or a specific part of its content.
