How many followers does 望月けい have on X?

望月けい (@key_999) has 1,076,484 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 Searches for 望月けい age often mean a personal age, which we do not publish.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 68,094 posts on X. That is about 11.5 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).

望月けい Twitter (X) Account Stats

@key_999

JapaneseTier S

View on X

#384 in Japanese

お仕事のご連絡▶︎mochikei999@gmail.comAccount age: 16 years (joined July 2010)x.com

望月けい Twitter (X) stats, updated continuously. @key_999 has 1,076,484 followers and 68,094 posts on X. Account age: 16 years (joined July 2010).

Followers

1.1M

Growth (7d)

Following

749

Influence

1.1K

Posts

68K~11.5/day

Likes given

17K

Media posts

2.1K

Follower ratio

1.4K:1

Insights

Its strongest tracked day added +14 followers on Jun 24, 2026.

Engagement

Top quarter for its size

Per follower

0.157%

of 1.1M followers

Per impression

1.74%

97K views on a typical post

Reach

9.01%

of its followers see a post

Typical post

1.7K

interactions (median)

Saved

0.129%

125 bookmarks on a typical post

Posting rate

2.23/day

active 63% of days

Peak time

02:00 UTC

Wednesday

A typical post picks up 1.7K interactions against 1.1M followers, an engagement rate of 0.157%. Measured over 9 original posts, its engagement rate beats 80% of 3,739 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 97K times each, and 1.74% of those impressions turn into an interaction. That is about 9.00% of the follower count, which is the gap between an audience on paper and an audience in a timeline.

Measured over 9 original posts from a 30-day window, last computed on September 1, 2026. Recurring tags: #リボンヒーロー, #theribbonhero, #内山昂輝.

Full engagement report

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Follower growth

2026-06-23+14 over 2 days2026-06-24

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.

杉田智和/アジルス2.1M まふまふ2.0M 葛葉1.8M 兎田ぺこら👯‍♀️ホロライブ3期生1.8M Mori Calliope💀holoEN1.5M

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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 1,076,484 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 68,094 posts on X. That is about 11.5 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).