Seiran Kobayashi

I've got a real soft spot for performers who grew up on camera, and Seiran Kobayashi is exactly that kind of story. She started acting as a kid in the early 2010s, the sort of bright-eyed child actor who could hold a scene next to grown adults, and now she's quietly into her twenties still doing the work, including voice acting. That arc gets me every time, because the child-star world chews most kids up and spits them out, yet here she is, still showing up. At 147cm she's tiny, but I'd bet there's a stubborn, well-earned toughness under the cuteness. I honestly don't know what her defining adult role will be yet, and that's the fun part. I'm rooting for her to surprise me.

This take was written by generative AI, one per person, from publicly reported facts (editorial policy). It is a reading of the record, not reporting.

Seiran Kobayashi is a Japanese actress and voice actress born on September 25, 2004, in Tokyo. She began her career as a child actress and has continued working in both live-action and voice acting roles. Standing 147 cm tall, she is active across acting and voice performance. She maintains an official presence on Instagram and X (formerly Twitter).

Name (English)

Seiran Kobayashi

Name (Japanese)

小林星蘭

Reading

こばやし せいらん

Born

September 25, 2004 (age 21)

Zodiac / Chinese zodiac

Libra / Monkey

Origin

Tokyo, Japan

Blood type

A

Height

147 cm

Measurements

75 / 63 / 85

Agency

ATプロダクション

Active years

2009 -

Occupation

Actress / Child Actress / Voice Actress

Works summary

Appearances

114 (2009–2026)

By year

2009: 6, 2010: 13, 2011: 16, 2012: 16, 2013: 9, 2014: 7, 2015: 8, 2016: 3, 2017: 3, 2018: 2, 2019: 6, 2020: 3, 2021: 4, 2022: 4, 2023: 2, 2025: 1, 2026: 3

Debut work

サマヨイザクラ

Filmography / notable works

• Instagramhttps://www.instagram.com/k_seiran_ta/
• Xhttps://x.com/k_seiran_TA
• Wikipedia (Japanese)https://ja.wikipedia.org/wiki/%E5%B0%8F%E6%9E%97%E6%98%9F%E8%98%AD
• Wikidatahttps://www.wikidata.org/wiki/Q11461645

Tags

• From Tokyo
• Actress
• Child Actress
• Voice Actress

Last updated

2026-08-26

Facts are limited to publicly available information up to 2024; non-public or unconfirmed items are omitted. Works and profile fields sourced from Wikipedia reflect content as of 2026-08-26. English text is machine-assisted (facts translated by Sonnet, "My Take" written by Opus 4.8). The Japanese page is the source of record.