Rentetsu

 (れんてつ) is an Idol group whose members work for a fictive railway company named Consolidated Railway Co., Ltd. The group was formed in 2014 and opened its own izakaya (れんてつかふぇ) in 2015, in Akihabara.

The current line-up was unveiled on May 3, 2019.

Current

 * Hamaguchi Hanna (濱口ハンナ; )
 * Kijou Asama (軌条あさま; )
 * Koukasen Komachi (高架線こまち; )
 * Koukasen Hayabusa (高架線はやぶさ; )

Former Members

 * Kanzashi Komachi (簪こまち) (Joined November 2014; Graduated April 5, 2017)
 * Super Beautiful Odoriko (スーパービューティフル踊り子; ) (Joined February 2015)
 * Yusha Asahi (遊車あさひ) (Joined February 2015; Graduated January 24, 2019)
 * Shūdenki Nanatsu-hoshi (集電器ななつ星) (Joined February 2015; Graduated March 14, 2020)
 * Wide View Hida (ワイドビュー飛騨) (Joined February 2015)
 * Wakasa Yakumo (若桜やくも; ) (Joined September 2015)
 * Multiple Tie Tamper Momo (マルチプルタイタンパーもも) (Joined September 2015)
 * Tenko Myū Sukai (点呼ミュースカイ) (Joined September 2015)
 * VVVF Haruka (VVVFはるか; ) (Joined January 2016, Graduated October 2018)
 * Tentetsuki Suzuran (転轍機すずらん) (Joined April 2016)
 * Makuragi Mizuho (枕木みずほ; ) (Joined April 2016, Graduated March 17, 2019)
 * Seto Izumo (瀬戸いずも) (Joined April 2016)
 * Shima Shimakaze (志摩しまかぜ) (Joined April 2016)
 * Heigei Unten Hayabusa (併結運転はやぶさ) (Joined May 2016)
 * Renketsu-ki Nozomi (連結器のぞみ) (Joined May 2016)
 * Kamata Misaki (蒲田みさき) (Joined December 2017)
 * Tomeoki Brake Hibari ga (留置ブレーキひばりが; ) (Joined May 2018, Graduated February 24, 2019)

Albums

 * 1) [2019.12.15] Rentetsu no Uta (れんてつのうた)

Singles

 * 1) [2020.06.07] railway girl/Yabai Onna (railway girl/やばい女)
 * 2) [2020.07.18] Eichinoyuuwaku/Kaburitsukitai (エイチノユウワク/かぶりつきたい)
 * 3) [2020.07.24] Kiseki no Diagram (奇跡のダイヤグラム)
 * 4) [2020.11.26] Santa ni Onegai (Santaにお願い)
 * 5) [2021.07.15] Ashita no Uta/Sakura (あしたのうた/桜)
 * 6) [2021.11.18] THE RAIL MASTER
 * 7) [2023.05.04] Syuppoppo (しゅっぽっぽ)