Japanese望月けい Twitter (X) stats, updated continuously. @key_999 has 1,091,254 followers and 67,984 posts on X. Account age: 16 years (joined July 2010).
Insights
Its strongest tracked day added +14 followers on Jun 24, 2026.
Engagement
A typical post picks up 15K interactions against 1.1M followers, an engagement rate of 1.42%. Measured over 14 original posts, its engagement rate beats 98% of 15,519 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 457K times each, and 3.38% of those impressions turn into an interaction. That is about 41.9% of the follower count, which is the gap between an audience on paper and an audience in a timeline.
Measured over 14 original posts from a 30-day window, last computed on October 7, 2026. Recurring tags: #リボンヒーロー, #theribbonhero, #ツイステ.
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Follower growth
Best tracked day: +14 followers on 2026-06-24.
Bio
kei Mochizuki / Illustrator アニメと絵が好きです ▶︎ アニメ「リボンヒーロー」/ LOOPERS / 第四境界 / レーミク2025 / FGO「バーヴァンシー」/ 刀剣乱舞「京極正宗」/ サンリオ「シエロモート」キャラデザ
Notable followers
The biggest accounts in our directory following @key_999.
望月けい on Twitter (X) - frequently asked questions
- How many followers does 望月けい have on X?
- 望月けい (@key_999) has 1,091,254 followers on X (Twitter). The count is refreshed continuously from public data.
- When did 望月けい join X, and how old is the account?
- 望月けい joined X in July 2010. The @key_999 account is 16 years old. Searches for 望月けい age often mean a personal age, which we do not publish. The figure here is the account age only.
- How many posts has 望月けい published?
- 望月けい has published 67,984 posts on X. That is about 11.4 posts per day over the life of the account.
- Is 望月けい verified on X?
- Yes. 望月けい is verified on X with a blue checkmark (X Premium).