Tezuka Machiko is a Japanese idol singer, and former gravure idol. She was a part of SKE48's Team KII but on December 1, 2009 she transferred to SDN48. She was known for having a bust measurement of 97J during her Gravure Idol days.
- Name: Tezuka Machiko (手束真知子)
- Stage Names: Harada Ourei (原田桜怜; Gravure Idol), Maeda Eiko (前田栄子; while in SKE48)
- Birthdate: February 25, 1985
- Blood Type: B
- Height: 154cm
- Bust: 88cm
- Waist: 62cm
- Hips: 88cm
B-sides Participated In
- Kodoku na Runner
- Sato e Wataru (Undergirls B)
- Tengoku no Door wa 3Kaime no Bell de Aku (Undergirls A)
- Abazure (Undergirls B)
- Yaritagariya San (Undergirls G)
- Uekara Natsuko (Undergirls B)
- Owaranai Encore
- Team KII 1st Stage: Namida no Shounan
- Team KII 1st Stage: Koi no PLAN
- Team KII 1st Stage: Rio no Kakumei
- Originally an Under girl, Machiko became a First Generation member with Nachu, Kohara Haruka, and Kaida Jyuri on May 10, 2010.
- Machiko is the only SDN48 member to have been transferred from SKE48 (the other transferred members were from AKB48).
- Was a gravure idol under the name Ourei Harada from 2004 to 2007.