BT21 Japan Official

Over the last 30 days @BT21_Japan lost 1,301 followers (-0.04%), including -626 in the last 7 days. Its strongest tracked day added +59 followers on Jul 19, 2026.

A typical post picks up 2.2K interactions against 3.5M followers, an engagement rate of 0.064%. Measured over 25 original posts, its engagement rate beats 79% of 983 tracked accounts of a similar size. Comparing inside a size band matters here: engagement rate falls as accounts grow, so a raw rate would mostly just re-measure the follower count. Posts are seen about 98K times each, and 2.25% of those impressions turn into an interaction. That is about 2.82% of the follower count, which is the gap between an audience on paper and an audience in a timeline.

Measured over 25 original posts from a 30-day window, last computed on August 23, 2026. Recurring tags: #bt21, #chimmy, #rj.

Best tracked day: +59 followers on 2026-07-19.

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.