Ichioka Reina (一岡伶奈) is a Japanese pop singer under Hello! Project as the leader of the sub-group CHICA#TETSU and a member of the combined group BEYOOOOONDS. She first joined as a member of Hello Pro Kenshuusei and was introduced in December 2012 at the Hello Pro Kenshuusei Happyoukai 2012 ~12gatsu no Nama Tamago Show!~.
Ichioka Reina was born on February 25, 1999 in Tokyo, Japan to a couple whose names are undisclosed.
During her middle school years, Ichioka participated in her school's acting club. She also began to take singing and dancing lessons during that time. In 2011, she participated in the EXILE audition.
Prior to auditioning for the Morning Musume 11ki Member "Suppin Utahime" Audition, she was a model under JS Girl.
She auditioned for Morning Musume's 11th generation and made it to the finals as contestant #61, but was not chosen to enter the group.
On November 20, it was announced that Ichioka would be joining Hello Pro Kenshuusei alongside five other girls. She was officially introduced at the Hello Pro Kenshuusei Happyoukai 2012 ~12gatsu no Nama Tamago Show!~ alongside Kanazawa Tomoko, Kaga Kaede, Wada Sakurako, Kishimoto Yumeno and Makino Maria.
In January, Ichioka Reina began her activities as an Hello Pro Kenshuusei by participating in the Hello! Project Tanjou 15 Shuunen Kinen Live 2013 Fuyu concerts.
On March 6, there was a fanclub event held for Ichioka and Makino Maria.
From April 4 to April 9, Ichioka participated in the stage play Ikinuku Kiseki ~Juu Nenme no Negai~.
On May 5, she participated in Hello Pro Kenshuusei Happyoukai 2013 ~Haru no Koukai Jitsuryoku Shindan Test~ and sang "Samui ne.". On May 19, she participated in the Hello! Project Yaon Premium Live ~Soto Fest~ event.
Ichioka participated as a backup dancer in the Morning Musume Concert Tour 2013 Aki ~CHANCE!~.
Ichioka participated as a backup dancer in the Berryz Koubou Debut 10th Anniversary Concert Tour 2014 ~Real Berryz Koubou~.
On May 4, Ichioka won the judge's dance award at the Hello Pro Kenshuusei Happyoukai 2015 ~Haru no Koukai Jitsuryoku Shindan Test~ event for her performance of "Nakimushi Shounen".
Ichioka participated as opening act in the ℃-ute Concert Tour 2016 Haru ~℃ONCERTO~, ℃-ute 12 Nenme Totsunyuu Kinen ~℃-Fes! Part 1 9gatsu 5ka mo ℃-ute no Hi at Nippon Budokan~, and ℃-ute Concert Tour 2016 Aki ~℃OMPASS~.
From January 5 to January 9, Ichioka participated as opening act in the ℃-ute Shinshun Concert 2017 ~℃OMPASS~.
On May 5, at the Hello! Project Kenshuusei Happyoukai 2017 ~Haru no Koukai Jitsuryoku Shindan Test~, there was a surprise announcement that she would debut alongside Dambara Ruru and Kawamura Ayano in the near future.
On June 26, it was announced in a special episode of Hello! Project Station that she would be debuting as the leader of a new group, although details and other members have yet to be decided.
On March 30, an update on Ichioka's new group was posted on the official Hello! Project website, nine months after the initial announcement. It was stated that she would form a "performance group" that uses physical expression to elevate their singing and dancing. The group will begin activities between the summer and fall, together with a second new group formed by Takase Kurumi and Kiyono Momohime.
An audition for new members to join either of the two groups was planned to begin in late April, but the date on which further audition details would be announced and applications would start being accepted was changed to May 11. On May 11, the Hello! Project "ONLY YOU" Audition" began.
On July 14, she debuted in Hello! Project, and subsequently left Hello Pro Kenshuusei, with the start of the Hello! Project 2018 SUMMER concerts.
On October 19, the name of Ichioka's group was announced as CHICA#TETSU. It was also announced that it would be part of the combined group BEYOOOOONDS alongside the second group Ame no Mori Kawa Umi and a third group formed by the Hello! Project "ONLY YOU" Audition winners.
On February 25, Ichioka celebrated her 20th birthday at a fanclub event titled BEYOOOOONDS / CHICA#TETSU Ichioka Reina Birthday Event 2019, featuring two shows at Shinjuku ReNY.
On July 29, it was announced Ichioka would star in Canvas, SKY PerfecTV!'s 25th Twitter morning drama series that would be posted every day from August 5 to August 10.
On December 11, it was announced that Ichioka would become an ambassador for the 90th anniversary of the Tokyu Oimachi Line. The inauguration ceremony took place on December 25.
On February 26, she celebrated her 21st birthday at a fanclub event titled BEYOOOOONDS / CHICA#TETSU Ichioka Reina Birthday Event 2020, featuring two shows at LANDMARK HALL.
On November 4, it was announced that she would appear on a new show titled "BEYOOOOONDS Ichioka Reina Hajimete no Tetsudo Tabi", where she would discuss her love for trains while riding them, accompanied by railroad enthusiast comedian Darling Honey Yoshikawa. The show began airing November 28. 
On February 25, she celebrated her 22nd birthday at a fanclub event titled BEYOOOOONDS / CHICA#TETSU Ichioka Reina Birthday Event 2021, featuring two shows at LANDMARK HALL.
On February 25, she celebrated her 23rd birthday at a fanclub event titled BEYOOOOONDS / CHICA#TETSU Ichioka Reina Birthday Event 2022, featuring two shows at LANDMARK HALL.
When Ichioka joined Hello Pro Kenshuusei, she was a second year middle school student. She started high school in April 2014 and graduated in March 2017.
The following list are notable friendships Ichioka Reina has acquired:
- Yamagishi Riko: She is good friends with Tsubaki Factory member Yamagishi Riko.
- Nomura Minami: She is good friends with Kobushi Factory member Nomura Minami.
- Sasaki Rikako: She is good friends with ANGERME member Sasaki Rikako.
- Horie Kizuki: She gets along well with Hello Pro Kenshuusei member Horie Kizuki.
- Maeda Kokoro: She gets along well with Ame no Mori Kawa Umi member Maeda Kokoro.
- Name: Ichioka Reina (一岡伶奈)
- Nicknames: Icchan (いっちゃん), Icchi (いっちー)
- Birthdate: February 25, 1999
- Birthplace: Tokyo, Japan
- Blood Type: A
- Height: 162.5 cm (5 ft 3.9 in)?
- Western Zodiac: Pisces
- Eastern Zodiac: Rabbit
- Hello! Project Status:
- UP-FRONT PROMOTION Status:
- 2012-11-20: Member
- BEYOOOOONDS / CHICA#TETSU Member Color:
- Light Blue
- Hello! Project Groups:
- Shuffle Units:
- Other Groups:
- Main article: Ichioka Reina/Discography
- [2019.07.26] BEYOOOOONDS CHICA#TETSU Ichioka Reina Birthday Event 2019 / Ame no Mori Kawa Umi Takase Kurumi Birthday Event 2019 / Ame no Mori Kawa Umi Kiyono Momohime Birthday Event 2018
- [2020.11.26] BEYOOOOONDS / CHICA#TETSU Ichioka Reina・Ame no Mori Kawa Umi Takase Kurumi Birthday Event 2020
- [2021.07.26] BEYOOOOONDS / CHICA TETSU Ichioka Reina・Ame no Mori Kawa Umi Takase Kurumi Birthday Event 2021
- Main article: Ichioka Reina/Publications
- [2021.10.28] CHILL#RAIL
-  Sakura no Hanataba as Shiina Yuuko (椎名裕子)
-  Ikinuku Kiseki ~Juunenme no Negai~ (イキヌクキセキ〜十年目の願い〜)
-  Nega Poji Poji
-  Pharaoh no Haka
-  Attack No.1
-  Fushigi no Kuni no Alicetachi
-  Reborn ~13nin no Tamashii wa Kami-sama no Yume wo Miru~
-  Arabeyooooonds Nights
-  Nemureru Mori no Biyo
-  JK Ninja Girls (cameo)
- [2013–2014] ~Onedari Entame!~ Hapi★Pure
- [2016–2019] The Girls Live
- [2019–2020] Hello Pro! TOKYO Sanpo (ハロプロ!TOKYO散歩)
-  KURAGAE ~Watashitachi no Koto, Oshite Kudasai!~ (KURAGAE –私たちのこと、推してください！-)
- [2020–] Uta-navi! (うたなび！)
-  Hello Dream. (ハロドリ。)
-  Hello! Project presents... "Solo Fes!"
-  BEYOOOOONDS Ichioka Reina Hajimete no Tetsudo Tabi (BEYOOOOONDS一岡伶奈 はじめての鉄道旅)
-  Hello! Project presents... "Solo Fes! 2"
-  Canvas (キャンバス) (SKY PerfecTV! Twitter)
- [2013-] Hello! Project Station
-  Hello Pro Kenshuusei no Tadaima Kenshuuchuu!
- [2016–] Upcoming
- [2017–] tiny tiny
- [2018–] OMAKE CHANNEL
- [2019–2020] Hello Pro no Oshigoto Challenge
-  Hello Pro Kouhaku Taiko THE☆BATTLE 2019
-  Hello Pro Dance Gakuen Kaigai Katsudo (1 episode)
- [2017–2019] HELLO! DRIVE! (HELLO! DRIVE! -ハロドラ-) (Thursdays)
-  ℃-ute - To Tomorrow (as a back-up dancer)
-  Juice=Juice - Jidanda Dance (as a back-up dancer)
|Leader of CHICA#TETSU
May 5, 2017 – Present
|Oldest Member of CHICA#TETSU
May 5, 2017 – Present
|Oldest Member of BEYOOOOONDS
October 19, 2018 – Present
- ^ May 5, 2017, the day it was decided Ichioka would debut as a member of Hello! Project, is listed as the official date she joined CHICA#TETSU on her member profile, although the group was not announced until June 26, 2017.
- ^ ^ Said during the Hello Pro Kenshuusei corner at the November 16 afternoon show of Morning Musume Concert Tour 2013 Aki ~CHANCE!~.
- BEYOOOOONDS / CHICA#TETSU Official Profile
- BEYOOOOONDS / CHICA#TETSU Official Blog
- Hello Pro Kenshuusei Profile (archived)
- Hello Pro Kenshuusei Blogs: June 2013, December 2013, 2014 Test, September 2014 (not tagged), November/December 2014, February/March 2015, 2015 Test, May/June 2015, Morning Musume/℃-ute Tour Blog