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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

Top quarter for its size
Per follower
0.315%
of 267K followers
Per impression
1.81%
46K views on a typical post
Reach
17.4%
of its followers see a post
Typical post
840
interactions (median)
Saved
0.018%
8 bookmarks on a typical post
Posting rate
1.33/day
active 47% of days
Peak time
08:00 UTC
Saturday

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%.

p100.002%
p250.016%
p50 (median)0.1%
p750.499%
p902.09%
p99119.9%
Engagement rate as a share of followers, across the 66,128 accounts we have scanned enough to measure. The axis is logarithmic, because the top and bottom of this population are about 57,111 times apart and a linear axis would flatten everything below the median into a single point.
Show the percentile table
Engagement rate percentiles
PercentileEngagement rate
10th percentile0.002%
25th percentile0.016%
50th percentile0.1%
75th percentile0.499%
90th percentile2.09%
99th percentile119.9%

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.

Engagement by hour posted, UTCTwenty-four bars, one per UTC hour. Each bar shows how posts published in that hour compare with their own authors' median engagement. Bars above the centre line ran higher than the median, bars below ran lower. A marker flags Busiest hour: 08:00 UTC.
0003060912151821
Above the authors' own mediansBelowScale: plus or minus 111%Busiest hour: 08:00 UTC
Show engagement by hour posted, utc as a table
Engagement by hour posted, UTC
Hour (UTC)Vs author medianPosts
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 UTC0%116K
22:00 UTC-2%100K
23:00 UTC-1%90K
Engagement by day of weekSeven bars, one per weekday, Sunday first. Each bar shows how posts published on that day compare with their own authors' median engagement. Bars above the centre line ran higher than the median, bars below ran lower. A marker flags Busiest day: Saturday.
SunMonTueWedThuFriSat
Above the authors' own mediansBelowScale: plus or minus 111%Busiest day: Saturday
Show engagement by day of week as a table
Engagement by day of week
DayVs author medianPosts
Sunday+5%393K
Monday+1%483K
Tuesday-2%520K
Wednesday-3%472K
Thursday-2%430K
Friday-3%447K
Saturday+2%393K
See what moves engagement across the whole catalogWhat counts as a good engagement rate at this size

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.

This account's posting mix compared with catalog-wide effects
FormatThis accountCatalog effect95% intervalAccounts behind it
Image or video29% of posts+111%+108% to +115%34K
Outbound link14% 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

    3.7K1952057106K viewsView on X
  • 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

    2.8K12831498K viewsView on X
  • 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!!

    2.1K73177115K viewsView on X
  • 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

    1.7K387392320K viewsView on X
  • 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)🫶

    1.7K1488658K viewsView on X
  • May 21, 20261.8x their median

    今年も何かしら栽培します🌱 https://t.co/56xDagMz79

    1.4K3828444K viewsView on X
  • 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

    1.4K2515556K viewsView on X
  • 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

    1.3K57161852K viewsView on X
  • 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

    1.3K704940K viewsView on X
  • 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

    1.2K3217363K viewsView on X

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

#ラシュボ#キュウソネコカミ#ベリテン#ラブシャ#map802

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.

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