Gekkan Oneechan to Issho

井上喜久子の
月刊お姉ちゃんといっしょ

This CD series is a set of talk and song CDs by Inoue Kikuko (井上喜久子), done in a manner similar to a radio show. Kikuko cosplays and wears various different outfits for the jacket photo of each CD.

The address to send the letters was as follows.
[all of the CDs have been recorded]

〒104
東京都中央区入船２－１－１
(株)ポニーキャニオン
井上喜久子の月刊「お姉ちゃんといっしょ」係

Inoue Kikuko no Gekkan Onee-chan to Issho
Pony Canyon
2-1-1 Irifune
Chuou, Tokyo 104
Japan

An oneechan to issho castanet (with a manbou mark) was given away with the first CD at certain CD stores.