- Birth Name: Chiba Erii (千葉恵里)
- Nickname: Erii (えりい)
- Date of Birth: October 27, 2003
- Place of Birth: Kanagawa, Japan
- Height: 162cm
- Weight: 40kg
- Bands / Groups:
AKB48 Song Participation
|Shoot Sign||Accident Chuu||AKB48 U-19 Senbatsu|
|Negaigoto no Mochigusare||Maebure|
|11gatsu no Anklet||Houtei Sokudo to Yuuetsukan||U-17 Senbatsu|
|Jabaja||Position||AKB48 Wakate Senbatsu|
|Tomodachi ga Dekita||Macharin to Nakamatachi.|
|Teacher Teacher||Romantic Junbichuu||Team A|
|NO WAY MAN||Wakari Yasukute Gomen||PRODUCE48 Senbatsu|
|Sustainable||Seishun Da Capo||AKB48 Coupling Senbatsu|
|Shitsuren, Arigatou||Untitled||1st Campus|
- FIRST LOVE (Zensa Girl solo)
- "Nankin Tamasudare"
- Bye Bye Bye (Kenkyuusei understudy)
- Hajimete no Jelly Beans (Kenkyuusei understudy)
- Tonari no Banana (Kenkyuusei understudy)
- Confession (Kenkyuusei understudy)
-  Produce 48
- Originally a candidate for the 2nd AKB48 Group Draft, she was drafted by Team 4 in the first round and remained in Kenkyuusei until she was promoted to Team 4 on September 27, 2017. She was transferred to Team A during the AKB48 team shuffle in 2017.
- Aims to be like Kotani Riho.
- She trained for three years and one month prior to her appearance on Produce 48.