Hello! Project Wiki
Hello! Project Wiki

Miyanaga Jiro (宮永治郎) is a Japanese composer, arranger, and guitarist. He is also the guitarist and leader of the rock band water.

Miyanaga has also written songs for the female rock band ZONE under the name Tora Jiro (虎じろう).


Miyanaga Jiro was born on October 1, 1969 in Yokohama, Kanagawa, Japan. He attended Higashi Katsushika High School in Chiba Prefecture and graduated from Sophia University's Department of Education.

In 1994, Miyanaga joined a rock band which was later named water in 1996. The band signed with Cube Group in 1997 and made their major debut a year later under the EMI Japan label. water broke up in 2001, but reformed in 2006.[1]

He has arranged songs for various Hello! Project artists and all-female rock bands such as ZONE and SCANDAL. Since 2014, he has worked on the majority of LoVendoЯ's songs and has performed in their concerts as a supporting guitarist.


  • Name: Miyanaga Jiro (宮永治郎)
  • Stage Name: Tora Jiro (虎じろう)
  • Birthdate: October 1, 1969 (1969-10-01) (age 52)
  • Birthplace: Yokohama, Kanagawa, Japan
  • Blood Type: AB
  • Western Zodiac: Libra.svg Libra
  • Eastern Zodiac: Rooster.png Rooster

Song Credits[]

Abe Natsumi[]




Ciao Bella Cinquetti[]

Country Girls[]


Kanazawa Tomoko[]


Kobushi Factory[]


Melon Kinenbi[]

Takahashi Ai, Tanaka Reina, Natsuyaki Miyabi[]

Tsukishima Kirari starring Kusumi Koharu (Morning Musume)[]


  1. "water" (in Japanese). TOWER RECORDS ONLINE.

External Links[]