Artist: Shinoda Team A (篠田TeamA)
- Team A: Izuta Rina, Iriyama Anna, Iwata Karen, Oshima Ryoka, Kasai Tomomi, Kawaei Rina, Kikuchi Ayaka, Kobayashi Marina, Sato Sumire, Shinoda Mariko, Takahashi Juri, Takahashi Minami, Tano Yuka, Nakatsuka Tomomi, Nakamata Shiori, Nito Moeno, Matsui Sakiko, Morikawa Ayaka, Watanabe Mayu
- AKB48 Team A / NMB48 Team N: Kotani Riho, Yokoyama Yui
There are currently two versions of "Ruby" to be found in AKB48's discography. These versions are:
- Ruby (Original)
- Found on the Type-A edition of the "So long!" single as track #3.
- Ruby off vocal ver.
- Found on the Type-A edition of the "So long!" single as track #6. This is the standard version without the main vocals.
- STUDIO48: "Ruby" lyrics