セイヤ ヤマサキ engagement report
@serubora - 267K followers on X
Measured over 14 original posts from a 30-day window, last computed on September 8, 2026.
Engagement
A typical post picks up 840 interactions against 267K followers, an engagement rate of 0.315%. Measured over 14 original posts, its engagement rate beats 81% of 6,874 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 46K times each, and 1.81% of those impressions turn into an interaction. That is about 17.4% of the follower count, which is the gap between an audience on paper and an audience in a timeline. Posting runs at about 1.3 post a day over the last 30 days, with activity on roughly 47% of days. Most posts go out around 08:00 UTC, and Saturday is the busiest day of the week. Of the 14 posts sampled, 29% carry an image or video, 14% are part of a thread and 14% link out. The account's strongest tracked post pulled 3.9K interactions, about 4.7x its own typical post. Recurring topics include #ラシュボ, #キュウソネコカミ, #ベリテン.
Measured over 14 original posts from a 30-day window, last computed on September 8, 2026. Recurring tags: #ラシュボ, #キュウソネコカミ, #ベリテン.
Compared with accounts its own size
セイヤ ヤマサキ's engagement rate beats 81% of the tracked X accounts closest to it in follower count (6,874 accounts, accounts of similar size (decile 7 of 10)). A percentile is spread evenly by construction, so 50 really is the middle of that group and 90 really is its top tenth.
On engagement per impression rather than per follower it beats 63% of the same group. When those two numbers disagree, the gap is about how far its posts travel rather than how people react to them.
Where this sits in the catalog
At 0.315%, セイヤ ヤマサキ sits above the 50th percentile of the 66,128 accounts in this comparison. That places it in the above the median band, which runs 0.1% to 0.499%.
Show the percentile table
| Percentile | Engagement rate |
|---|---|
| 10th percentile | 0.002% |
| 25th percentile | 0.016% |
| 50th percentile | 0.1% |
| 75th percentile | 0.499% |
| 90th percentile | 2.09% |
| 99th percentile | 119.9% |
This ruler is the whole measured catalog, not a size-matched group: it shows where the raw rate falls across every account we can measure, all of which are large. For a like-for-like comparison, read the size-band percentile above instead. See how the bands are built
Posting timing
This account posts most often around 08:00 UTC, and Saturday is its busiest day of the week. The bars below are the catalog-wide pattern, with this account's own busiest slot marked. They do not show how this account performs at each hour: we keep one aggregate per account, not one per hour, so that measurement does not exist in our data.
Show engagement by hour posted, utc as a table
| Hour (UTC) | Vs author median | Posts |
|---|---|---|
| 00:00 UTC | -1% | 89K |
| 01:00 UTC | -2% | 90K |
| 02:00 UTC | -3% | 88K |
| 03:00 UTC | -4% | 94K |
| 04:00 UTC | -5% | 76K |
| 05:00 UTC | -4% | 75K |
| 06:00 UTC | -5% | 86K |
| 07:00 UTC | -5% | 93K |
| 08:00 UTC | -4% | 108K |
| 09:00 UTC | -4% | 124K |
| 10:00 UTC | -3% | 129K |
| 11:00 UTC | -3% | 141K |
| 12:00 UTC | -3% | 154K |
| 13:00 UTC | -3% | 167K |
| 14:00 UTC | -4% | 173K |
| 15:00 UTC | -2% | 176K |
| 16:00 UTC | -3% | 171K |
| 17:00 UTC | -3% | 159K |
| 18:00 UTC | -2% | 149K |
| 19:00 UTC | -2% | 141K |
| 20:00 UTC | -1% | 131K |
| 21:00 UTC | 0% | 116K |
| 22:00 UTC | -2% | 100K |
| 23:00 UTC | -1% | 90K |
Show engagement by day of week as a table
| Day | Vs author median | Posts |
|---|---|---|
| Sunday | +5% | 393K |
| Monday | +1% | 483K |
| Tuesday | -2% | 520K |
| Wednesday | -3% | 472K |
| Thursday | -2% | 430K |
| Friday | -3% | 447K |
| Saturday | +2% | 393K |
Formats this account uses
Its own posting mix on the left, and what each of those formats does across every account we track on the right. Only formats where the effect clears our publish test appear here, so an empty row is a format we could not measure rather than one that does nothing.
| Format | This account | Catalog effect | 95% interval | Accounts behind it |
|---|---|---|---|---|
| Image or video | 29% of posts | +111% | +108% to +115% | 34K |
| Outbound link | 14% of posts | -41% | -42% to -40% | 32K |
| Typical length | - | -8% | -9% to -7% | 41K |
- 29% of this account's sampled posts carry an image or video. Across the catalog, posts with an image or video run 111% above the same accounts' other posts.
- 14% of its posts carry a link off X. Across the catalog, posts with an outbound link run 41% below the same accounts' other posts.
- Its average post runs 64 characters, which falls in the under 80 characters band. Across the catalog, posts under 80 characters run 8% below the same accounts' other posts.
These are catalog-wide differences applied to this account's own posting mix, not a measurement of how each format performs for this account specifically. We keep one median per account, not one per format per account, so the second thing is not something this data can tell you.
Best tweets
- Aug 1, 20264.7x their median
久しぶりにファッショニスタ康雄さんと ツーショあざます(ё)✨ 短丈っすよね!!!! https://t.co/V3j9FqHeRs
- Aug 1, 20263.5x their median
久しぶりに飲めた!! 実は先輩でしたをやっと言えた!!!笑 (後輩のフリして大阪で飯奢ってもらったことある) あざしたぁ!!!!!🪄✨ https://t.co/6Z2VIsl1Hs
- Aug 15, 20262.7x their median
サマソニ大阪いてきた!!! 奮発してプラチナった!!! のんびりしててもめちゃ近くで観れた!!!えぐい!!! トイレも助かり!!! けど、物販は朝イチから行かんとプラチナの恩恵あんまりないかも!!笑 KASABIANとThe Strokesやっと観れた!ホンモノー!生きてる!!(ё)最高!!
- Aug 8, 20262.6x their median
\ABEMAの無料配信📺✨/ ABEMAにて生配信を行います🎥✨ 当日参戦できない方も生のライブを体感してください! #LuckyFes のハッシュタグで一緒に盛り上がりましょう! LIVE配信の合間に一部アーティストのトークコーナーも放送🎙️ https://t.co/tHYiuXtji4 ※全アーティストの配信はございません ※偽サイトに十分ご注意ください #abema #アベマ
- Aug 5, 20262.3x their median
今日は会長ソゴウが筋斗雲乗るので鈴鹿がへルプでDQN叩いてくれた。原曲よりちょいゆったりくらいの心地良いBPMでいつもより歌い上げる系になっていた、途中でもっとテンポを上げろとジェスチャーしたらすぐに加速してくれてさすがやなと思うなどした。 良い一日やった〜 ソゴウ会!末長く続けて(ё)🫶
- May 21, 20261.8x their median
今年も何かしら栽培します🌱 https://t.co/56xDagMz79
- Aug 18, 20261.7x their median
東京駅のロッカーに適当に預けて酒飲んだら場所忘れて焦った 無事見つかった
- Aug 23, 20261.6x their median
釣り🎣 楽しかった〜!! with @megapan_megapan 誘ってくれてサンクス🐼💥 https://t.co/adgo5gZsde
- Aug 18, 20261.6x their median
独自路線を貫き20年目で武道館。 八十八ヶ所巡礼かっこ良すぎた👏 https://t.co/krFx3pHmMz
- Aug 8, 20261.5x their median
スピりスピられ まだ凶スピだけ出てない 今日は半スピ
Ranked by total interactions across everything we have tracked for this account, which is a longer history than the 30-day window the rates above use. The multiple compares each post to this account's own median.
Recurring topics
The most frequent hashtags in the sampled posts. They describe what this account writes about; they are not a performance signal, and the catalog-wide breakdown on the hub shows how little hashtag count moves.
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Reading these numbers
A typical post picks up 840 interactions against 267K followers, an engagement rate of 0.315%. Measured over 14 original posts, its engagement rate beats 81% of 6,874 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 46K times each, and 1.81% of those impressions turn into an interaction. That is about 17.4% of the follower count, which is the gap between an audience on paper and an audience in a timeline. Posting runs at about 1.3 post a day over the last 30 days, with activity on roughly 47% of days. Most posts go out around 08:00 UTC, and Saturday is the busiest day of the week. Of the 14 posts sampled, 29% carry an image or video, 14% are part of a thread and 14% link out. The account's strongest tracked post pulled 3.9K interactions, about 4.7x its own typical post. Recurring topics include #ラシュボ, #キュウソネコカミ, #ベリテン.
- What is セイヤ ヤマサキ's engagement rate on X?
- セイヤ ヤマサキ (@serubora) has an engagement rate of 0.315%, based on the median interactions across 14 original posts from the last 30 days against 266,551 followers. Replies, reposts and quote-posts of other people are excluded from that sample.
- Is that a good engagement rate?
- At 0.315%, セイヤ ヤマサキ sits above the 50th percentile of the 66,128 accounts in this comparison. Those comparison accounts are all large ones, because our scanning cadence is weighted towards big accounts, so this is a ranking among peers of similar scale rather than a ranking across X.
- Does @serubora have real engagement?
- Its engagement rate beats 81% of the tracked X accounts closest to it in follower count (6,874 accounts), which puts it in the top quarter for its size group. Ranking inside a size band matters because engagement rate falls as accounts grow, so a raw rate would mostly re-measure the follower count. It is a starting point for a look at follower quality, not a verdict on it.
- When does @serubora post?
- Most posts go out around 08:00 UTC, and Saturday is its busiest day, at roughly 1.33 posts per day across the measured window.