Machiko Tezuka (手束真知子) (born 25 February 1986) is a Japanese idol, and member of SDN48. She has previously had careers as a gravure idol/bikini model under the stage name Ourei Harada (原田 桜怜), and Eiko Maeda (前田 栄子), as a member of idol group SKE48.
In 2004, Tezuka began her career in the gravure business as Ourei Harada. Her most noticeable feature was her G-cup breasts. Her first photobook, Vanilla, was released in Japan just after her eighteenth birthday. This initial success was followed up with photoshoots in several magazines and websites. In 2004 she won the Miss Magazine annual gravure idol contest put on by publisher Kodansha. According to her blog, Tezuka retired from the gravure idol world as of March 31, 2007.
Tezuka returned to the media spotlight in May, 2008 by reporting via webcast on the press release for Metal Gear Solid 4 held by Sony in Tokyo. From the footage of this webcast it is apparent that she has had breast reduction during her previous retirement. Following her return to show business, Tezuka became a weather reporter for a regional company that provides cellphone updates. Her blog reopened during this time period only to shut down again on April 14, 2009.
On April 15, 2009, it was announced that Tezuka would be changing her stage name to Eiko Maeda and joining the pop idol group SKE48. This is a rather unusual career move for the former Japanese bikini idol who has had breast reduction surgery because even though SKE48 supposedly only allows new members who are under the age of 20, Maeda Eiko was able to join at the age of 23. On November 30, 2009 she moved to SKE48's sister group, SDN48, and change her stage name to Machiko Tezuka.