Kobayashi Hikaru was born April 19, 1994 in Tokyo, Japan.
In 2011, Kobayashi was a finalist in Seventeen magazine's annual Miss Seventeen contest to become an exclusive model, but did not win.
In late 2015, Kobayashi participated in the second recruitment of the 2015 Natsuyaki Miyabi Shin Group Member Audition and passed into the final round.
On April 1, she and Nihei were both announced as the winners and had become members of Natsuyaki Miyabi's new group. The group's name was later announced as PINK CRES. on August 25 at Buono! Festa 2016, where they were guests and performed in concert for the first time.
On June 10, it was announced that Kobayashi would star in Fuusen no Yukue, SKY PerfecTV!'s 18th Twitter morning drama series posted every day from June 17 to June 22.
On March 19, it was announced that PINK CRES. would be disbanding on June 30. Around the end of 2020, Kobayashi Hikaru and Nihei Yuuka discussed with Natsuyaki Miyabi about graduating from the group and, as result of the discussions and the staff respecting their decisions, the group would be disbanding on June 30 with Kobayashi and Nihei also leaving UP-FRONT CREATE. Kobayashi planned on working in the fashion industry in the future.
When Kobayashi joined PINK CRES. she was is in her last year of university. Her graduation thesis was a psychological study on how the shape of eyebrows and the space between the eyebrows and the eyes can change impressions. She graduated from university on March 22, 2017.
Kobayashi's given name Hikaru is written in full hiragana, but it is derived from the kanji 光 meaning "light".
Discography Featured In
Concerts Featured In
- PINK CRES. 1st LIVE ~crescendo~
- PINK CRES. LIVE ~Halloween Special!~
- PINK CRES. LIVE 2018 ~P・I・N・K~
- PINK CRES. 1st Live Tour 2018 ~PINK LAND~
- PINK CRES. COUNTDOWN LIVE ~3,2,1, Happy New Year~
- PINK CRES. LIVE 2019 ~CHANGE PRIDE~
- PINK CRES. LIVE TOUR 2019 ~CONFUSION~
- PINK CRES. LAST LIVE ~LOVE YOU ♡ PINK CLASS.~
Events Featured In
- Natsuyaki Miyabi Shin Group Ohirome Fanclub Event Are You ready?
- Pink Cres. Party! ~Pink 1 Shuunen & Natsuyaki Miyabi Birthday Special~
- PINK CRES. PETIT Party!
- PINK CRES. PETIT Party! ~Challenge Hen~
- Pink Cres. HBD Party! ~PINK& Miyabi SP~
- Pink Cres. Halloween Petit Party! ~with Nihe's birthday~
- PINK CRES. PETIT Party! ~HIKARU BIRTHDAY SP~
- PINK CRES. HBDParty! ~M.Y.B. LV.27~
- PINK CRES. Halloween Petit Party! ~NIHEOME PORM☆PORM NIGHT~
- PINK CRES. HBD Party! ~Miya-chan Birthday Watashi mo Wasurenaide by Hikaru~
- PINK CRES. Halloween Petit Party! ~Nihei no Otanjoubi Kai! 25 ni narimashita SP☆~
SATOYAMA & SATOUMI movement
- Asobu. Kurasu. Sodateru. SATOYAMA & SATOUMI e Ikou 2017
- Asobu. Fureau. Taiken Suru. SATOYAMA & SATOUMI Aki Camp in Odawara
- Asobu. Kurasu. Sodateru. SATOYAMA & SATOUMI e Ikou 2018
- SATOYAMA & SATOUMI with Nyaozane Matsuri in Kumagaya
- Asobu. Kurasu. Sodateru. SATOYAMA & SATOUMI e Ikou 2019
- Think over (Rap Lyrics)
-  Fuusen no Yukue (風船の行方; Balloon's Whereabouts) (SKY PerfecTV Twitter)
- [2016–2019] HELLO! DRIVE! (HELLO! DRIVE! -ハロドラ-) (Tuesdays)
- She used to like Ojamajo Doremi.
- She became a beginner driver in June 2016.
- She used to work part-time at an apparel shop, a café, a bookstore, and as event staff. She says working in apparel was the most fun out of them all.
- Up until when she passed the audition to join PINK CRES., she only listened to Hello! Project songs and rarely listened to music by other artists. She recently started liking Flower and songs by other female artists, particularly pretty ballads and calm songs.
- She learned to play piano when she was an elementary school student, but has since forgotten how.
- She has the same last name as original Country Musume member Kobayashi Azusa, and BEYOOOOONDS member Kobayashi Honoka.