JapaneseBT21 Japan Official Twitter (X) stats, updated continuously. @BT21_Japan has 3,468,177 followers and 3,931 posts on X. Account age: 8 years (joined October 2017).
Insights
Over the last 30 days @BT21_Japan lost 219 followers. In the last 7 days the change was +1,050 followers. Its strongest tracked day added +771 followers on Oct 4, 2026.
Engagement
A typical post picks up 2.3K interactions against 3.5M followers, an engagement rate of 0.066%. Measured over 19 original posts, its engagement rate beats 66% of 15,519 tracked accounts of a similar size, which puts it in the middle of its size range rather than at either end. Posts are seen about 92K times each, and 2.49% of those impressions turn into an interaction. That is about 2.65% of the follower count, which is the gap between an audience on paper and an audience in a timeline.
Measured over 19 original posts from a 30-day window, last computed on October 7, 2026. Recurring tags: #bt21, #cooky, #mang.
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Follower growth
Best tracked day: +771 followers on 2026-10-04.
Bio
LINE FRIENDSとBTSのコラボレーションで誕生したグローバル人気キャラクター「BT21」の最新情報をお届け♪ BT21公式サイト【https://t.co/CNpqXIQ4Kw】 公式オンラインストア【https://t.co/pfGGgnKJGg】
Notable followers
The biggest accounts in our directory following @BT21_Japan.
BT21 Japan Official on Twitter (X) - frequently asked questions
- How many followers does BT21 Japan Official have on X?
- BT21 Japan Official (@BT21_Japan) has 3,468,177 followers on X (Twitter). It gained 921 new followers in the last 7 days. The count is refreshed continuously from public data.
- When did BT21 Japan Official join X, and how old is the account?
- BT21 Japan Official joined X in October 2017. The @BT21_Japan account is 8 years old. Searches for BT21 Japan Official age often mean a personal age, which we do not publish. The figure here is the account age only.
- How many posts has BT21 Japan Official published?
- BT21 Japan Official has published 3,931 posts on X. That is about 1.2 posts per day over the life of the account.
- Is BT21 Japan Official verified on X?
- Yes. BT21 Japan Official carries a Business verification on X.
- Is BT21 Japan Official gaining or losing followers?
- BT21 Japan Official is currently losing followers, with a net -219 over the last 30 days. Over the last 7 days the change was +1,050.