Japanese山下誠一郎 Seiichiro Yamashita is on Twitter (X) as @seichiro0521, with 121,954 followers and 13,766 posts. A typical post draws 1.5K interactions, an engagement rate of 1.23% per follower. It has been on X since April 2020, an account age of 6 years.
Engagement
A typical post picks up 1.5K interactions against 122K followers, an engagement rate of 1.23%. Measured over 19 original posts, its engagement rate beats 92% of 20,444 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 77K times each, and 1.95% of those impressions turn into an interaction. That is about 63.1% 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 5, 2026. Recurring tags: #おねがいアイプリ, #アオアシ, #ツイステ.
Full engagement reportFollower growth
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Bio
声優、ナレーターです。https://t.co/DumZaq56KN YouTubeはじめました、ハッシュタグ #せいち新天地⛩️/インスタはじめました📸https://t.co/V1mSJjGJEj
Notable followers
The biggest accounts in our directory following @seichiro0521.
山下誠一郎 Seiichiro Yamashita on Twitter (X) - frequently asked questions
- What is the Twitter handle for 山下誠一郎 Seiichiro Yamashita?
- 山下誠一郎 Seiichiro Yamashita posts on Twitter (X) as @seichiro0521. The profile is at x.com/seichiro0521, and the View on X button at the top of this page opens it.
- How many followers does 山下誠一郎 Seiichiro Yamashita have on Twitter?
- 山下誠一郎 Seiichiro Yamashita (@seichiro0521) has 121,954 followers on Twitter (X). The count is refreshed continuously from public data.
- When did 山下誠一郎 Seiichiro Yamashita join Twitter?
- 山下誠一郎 Seiichiro Yamashita joined Twitter (X) in April 2020. The @seichiro0521 account is 6 years old. Searches for 山下誠一郎 Seiichiro Yamashita age often mean a personal age, which we do not publish. The figure here is the account age only.