城瀬いすみ🏰🍬にじさんじ engagement report
@Shiro_Isumyan - 99K followers on X
Measured over 20 original posts from a 30-day window, last computed on August 24, 2026.
Engagement
A typical post picks up 2.0K interactions against 99K followers, an engagement rate of 2.10%. Measured over 20 original posts, its engagement rate beats 95% of 3,917 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 4.42% of those impressions turn into an interaction. That is about 46.1% of the follower count, which is the gap between an audience on paper and an audience in a timeline. Posting runs at about 2.1 posts a day over the last 30 days, though only 37% of days saw any activity at all. Most posts go out around 10:00 UTC, and Thursday is the busiest day of the week. Of the 20 posts sampled, 60% carry an image or video and 70% link out. The account's strongest tracked post pulled 26K interactions, about 13x its own typical post. Recurring topics include #3skm_1stライブ, #にじメンマイクラ, #城瀬いすみ.
Measured over 20 original posts from a 30-day window, last computed on August 24, 2026. Recurring tags: #3skm_1stライブ, #にじメンマイクラ, #城瀬いすみ.
Compared with accounts its own size
城瀬いすみ🏰🍬にじさんじ's engagement rate beats 95% of the tracked X accounts closest to it in follower count (3,917 accounts, accounts of similar size (decile 5 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 87% 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 2.10%, 城瀬いすみ🏰🍬にじさんじ sits above the 75th percentile of the 37,856 accounts in this comparison. That places it in the top 25% band, which runs 0.439% to 2.10%.
Show the percentile table
| Percentile | Engagement rate |
|---|---|
| 10th percentile | 0.002% |
| 25th percentile | 0.012% |
| 50th percentile | 0.081% |
| 75th percentile | 0.439% |
| 90th percentile | 2.10% |
| 99th percentile | 155.6% |
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 10:00 UTC, and Thursday 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% | 53K |
| 01:00 UTC | -2% | 53K |
| 02:00 UTC | -3% | 52K |
| 03:00 UTC | -4% | 55K |
| 04:00 UTC | -6% | 44K |
| 05:00 UTC | -4% | 43K |
| 06:00 UTC | -4% | 50K |
| 07:00 UTC | -5% | 54K |
| 08:00 UTC | -4% | 63K |
| 09:00 UTC | -3% | 72K |
| 10:00 UTC | -2% | 75K |
| 11:00 UTC | -3% | 81K |
| 12:00 UTC | -2% | 90K |
| 13:00 UTC | -2% | 98K |
| 14:00 UTC | -3% | 101K |
| 15:00 UTC | -2% | 105K |
| 16:00 UTC | -4% | 102K |
| 17:00 UTC | -3% | 95K |
| 18:00 UTC | -1% | 88K |
| 19:00 UTC | -2% | 83K |
| 20:00 UTC | -1% | 77K |
| 21:00 UTC | -1% | 69K |
| 22:00 UTC | -2% | 60K |
| 23:00 UTC | -2% | 53K |
Show engagement by day of week as a table
| Day | Vs author median | Posts |
|---|---|---|
| Sunday | +5% | 238K |
| Monday | 0% | 302K |
| Tuesday | -3% | 302K |
| Wednesday | -1% | 257K |
| Thursday | -2% | 250K |
| Friday | -3% | 259K |
| Saturday | +3% | 233K |
Best tweets
- Aug 5, 202613x their median
ファイアダンス - Vivid BAD SQUAD 様 歌ってみた / セラフ・ダズルガーデン & 風楽奏斗 & 城瀬いすみ &篠宮ゆの 【https://t.co/yVUUHkuCVp】 https://t.co/NlbhxySTMG
- Jul 26, 202610x their median
°˖♡- - - - - - -ʚ🏰ɞ - - - - - - -♡˖° ダーリンダンス - かいりきベア様 歌ってみた / 城瀬いすみ & 早乙女ベリー 【https://t.co/Ngmi8sxIgk】 °˖♡- - - - - - -ʚ🍰ɞ - - - - - - -♡˖° https://t.co/eUnxHOwXcX
- Aug 14, 20265.8x their median
✧⊹˖┈ ┈ ┈ ┈ ┈ ┈˖⊹✧ 「ポニーテールと シュシュ」 covered by すぷれあ ✧⊹˖┈ ┈ ┈ ┈ ┈ ┈˖⊹✧ 君の笑顔 僕の夏が始まる 【 https://t.co/SCGhu9ZCl6 】 https://t.co/iZaa1ab3yz
- Sep 22, 20254.7x their median
【❥タグ各種】 城瀬いすみ(Shirose isumi) ಇ 配信 : #いすみと登城 ಇ ファンマーク : 🏰🍬 ಇ FA : #シロ展示館 ಇサムネイル : #おめかシロ ಇエゴサ : #いすみいいこ ಇアクセサリー : #いすみゃコーデ ಇボイス感想 : #いすみィータイム ಇプロフ帳 : #いすみの取扱説明書 https://t.co/7sdw7z8Vq7
- Aug 20, 20263.0x their median
13万人ありがとうの気持ち♡ https://t.co/TVNQXLVbmF https://t.co/TBEjD9Owvc
- Aug 18, 20262.2x their median
【❥TikTok ・short投稿】 未完成婚姻論 / Dannie May様 城瀬いすみ 歌ってみた °˖♡- - - - - - - ʚ🏰🍰ɞ - - - - - - -♡˖° TikTok :【https://t.co/6uYqu3e88a】 Youtube :【https://t.co/qeesoRfJy2】 https://t.co/jbf10SAiY3
- Aug 13, 20261.7x their median
【❥配信告知】 ಇ8/14 20:30〜 https://t.co/hJoHgHVFT0 °˖♡- - - - - - - ʚ 🏰 ɞ - - - - - - -♡˖° 初のASMR🌙いろんな音で君を癒すよ🤍 初めてなので、うまくできるか不安だけど、安眠にご案内〜🥱 https://t.co/HAECbm25HH
- Aug 19, 20261.7x their median
short動画投稿𓂃༞🩵29日目! 家長さんとのコラボ6本目~! It's Me踊ってみました!難しかった🫠 今回の編集もすぷれあのいすみゃにしてもらってます! いっすみーってか・・・わはは それじゃあ、いすみゃ後は任せましたよ。 https://t.co/CG15W4hbJk
- Aug 19, 20261.6x their median
夏休み自由研究おつれあ〜‼️👑💍🏰🧢 久しぶりに紙粘土コネコネできて楽しかった〜‼️ BIGちゃんぜっちゃんぜっちゃんぜぜぜっちゃん‼️つくってみてね。 これは左から ばさばさつばさ カブトムシ マカロン おにぎり https://t.co/mbnWkn0tOS
- Aug 24, 2026
【❥TikTok ・short投稿】 深海少女 / ゆうゆ様 城瀬いすみ 歌ってみた °˖♡- - - - - - - ʚ🏰🍬ɞ - - - - - - -♡˖° TikTok :【https://t.co/KLEhP5QXvr】 Youtube :【https://t.co/3INEYqqGhF】 https://t.co/aX2Xd6wMas
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 2.0K interactions against 99K followers, an engagement rate of 2.10%. Measured over 20 original posts, its engagement rate beats 95% of 3,917 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 4.42% of those impressions turn into an interaction. That is about 46.1% of the follower count, which is the gap between an audience on paper and an audience in a timeline. Posting runs at about 2.1 posts a day over the last 30 days, though only 37% of days saw any activity at all. Most posts go out around 10:00 UTC, and Thursday is the busiest day of the week. Of the 20 posts sampled, 60% carry an image or video and 70% link out. The account's strongest tracked post pulled 26K interactions, about 13x its own typical post. Recurring topics include #3skm_1stライブ, #にじメンマイクラ, #城瀬いすみ.
- What is 城瀬いすみ🏰🍬にじさんじ's engagement rate on X?
- 城瀬いすみ🏰🍬にじさんじ (@Shiro_Isumyan) has an engagement rate of 2.10%, based on the median interactions across 20 original posts from the last 30 days against 99,151 followers. Replies, reposts and quote-posts of other people are excluded from that sample.
- Is that a good engagement rate?
- At 2.10%, 城瀬いすみ🏰🍬にじさんじ sits above the 75th percentile of the 37,856 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 @Shiro_Isumyan have real engagement?
- Its engagement rate beats 95% of the tracked X accounts closest to it in follower count (3,917 accounts), which puts it in the top 10% 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 @Shiro_Isumyan post?
- Most posts go out around 10:00 UTC, and Thursday is its busiest day, at roughly 2.07 posts per day across the measured window.