TikTok OSINT Intelligence Report: HachikujiTsukii (@hachikujitsukii)
Generated: Jul 15, 2026
hachikujitsukii
Online Presence (2 verified)
Bottom Line Up Front
@hachikujitsukii is a public TikTok persona centered on Kaai Yuki / Vocaloid fan content. The account appears authentic as a consistent fan persona, with steady posting, meaningful engagement on several posts, and no direct evidence of scam or impersonation. The strongest linked presence found is YouTube, but no email was recovered.
Key Judgments
The account most likely represents a genuine fan persona rather than a stolen or impersonated identity.
Audience engagement looks mixed but not obviously artificial; one post shows unusually strong performance, while the rest are more typical for a mid-sized fan account.
The subjectβs online footprint is narrow and hobby-focused, which reduces the likelihood of broad real-world identity exposure.
Risk Assessment
Analytic confidence in this assessment is high.
Identity resolution
Resolved Primary Identity
HachikujiTsukii
The best-resolved identity is a TikTok fan persona using the handle @hachikujitsukii and display name HachikujiTsukii. Evidence strongly supports that this is the accountβs stable public identity on TikTok, but it does not establish a legal real-world name. The profile theme, bio language, and post topics are internally consistent and point to an anime/Vocaloid fan account, especially Kaai Yuki.
Resolved Identifiers
username
hachikujitsukii
other
HachikujiTsukii
website
https://www.tiktok.com/@hachikujitsukii
other
Kaai Yuki fan / Vocaloid fan persona
Online presence
The subject has a clearly established TikTok persona and a possible YouTube presence under a related name string. No email was found, and no other linked accounts were confirmed from the provided evidence.
TikTok • Public
Linkage Basis:
- Direct profile match from provided URL
- Matching handle in profile metadata
- Matching display name and bio across profile and posts
YouTube • Unknown
Linkage Basis:
- Appears in cross-platform social search for the same query string
- No direct content match or ownership confirmation in evidence
Search 15B+ breach records for @hachikujitsukii
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- Billions of records
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Target Alias
@hachikujitsukii
Account OSINT
Top Associated Accounts
The network is mostly fandom-centric. The strongest visible tie is to the Kaai Yuki/Vocaloid community, with a few likely content-source contacts and one possible YouTube presence.
Kaai Yuki / Vocaloid community
organizationTikTok content theme
"The account repeatedly centers on Kaai Yuki and Vocaloid fandom in bio and captions."
@ππisoki β‘ kaworuπͺ½
repeat_interactionTikTok caption credit
"Appears as a credited source in one caption, but ownership or closeness is not established."
@greenTEA1919
repeat_interactionTikTok caption credit
"Appears as a content credit in one post, but the relationship is only contextual."
https://www.youtube.com/hachiku
same_username_patternsocial search result
"Could be related, but there is not enough evidence to confirm the same operator."
Who is hachikujitsukii associated with?
Reveal the Tiktok accounts hachikujitsukii is connected to and interacts with most.
Reveal Associates »Account Timeline
Posting is steady enough to look organic, with a clear niche and occasional high-performing outliers. The engagement profile is not perfectly uniform, but it does not read like obvious automation or engagement farming.
Account Created
2025-06-07
The account is not new, but it is still relatively young.
Latest Post
2026-07-12
The account was active very recently in the visible post set.
Posting Window
2026-03-09 to 2026-07-12
Visible content shows sustained activity over several months.
Activity Gap
Large performance swing between ordinary posts and the 2026-05-17 post with 138,882 views.
One standout post likely drove a temporary reach spike.
Map the hidden network.
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Intelligence gathered
Strong Identifiers And Pivots
- The account handle is @hachikujitsukii and the display name is HachikujiTsukii; both align across profile metadata and search results.
- The account creation time corresponds to 2025-06-07, giving the profile roughly a one-year-old age at the report date.
Intelligence Gaps 2
- No legal name, phone number, email, or biolink was present in the evidence.
- No external profile links were embedded in the TikTok bio or recovered from the email-finder result.
Weak Identifiers And Background Markers
- The avatar image appears to be a portrait-style image, but the image analysis did not indicate meaningful deepfake concern.
- The account follows 119 users and has 5,109 followers, which suggests a real community footprint but not a large-scale influencer presence.
Intelligence Gaps 2
- No school, employer, or real-world location was available.
- No consistent real-name markers were found in the profile or post set.
Account Attribution And Identity Linkage
- Attribution to the TikTok account is strong because the handle, display name, bio, and post history all point to the same persona.
- The account is verified, but the evidence does not show a formal platform verification badge reason or identity category.
Intelligence Gaps 2
- No off-platform proof of ownership was available.
- The verification status alone does not confirm legal identity.
Online Presence And Platform Activity
- The profile has 18 videos/photos, about 45.8K likes, 5,109 followers, and 119 following, which fits a focused creator account.
- The visible content is heavily centered on Kaai Yuki and Vocaloid-related fan edits or reposted visuals.
Intelligence Gaps 2
- Only one platform was directly verified.
- No playlist, livestream, or bio-link ecosystem was found.
Behavioral Markers And Preferences
- The account shows strong fandom preferences, especially Kaai Yuki, with repeated praise and affectionate language in captions and bio.
- The content style suggests meme/fan-edit behavior rather than commercial posting.
Intelligence Gaps 2
- No direct comment analysis was available.
- No private-message or interaction data was available.
Temporal Markers And Activity Windows
- The profile creation date is 2025-06-07.
- Visible posts cluster between 2026-03-09 and 2026-07-12, showing active posting across several months.
Intelligence Gaps 2
- No full historical archive was available.
- No time-zone or daily activity pattern could be inferred from the evidence.
Best next moves
Verify whether the YouTube handle https://www.youtube.com/hachiku belongs to the same persona
It is the only cross-platform presence surfaced by the search evidence, but ownership is not confirmed. Matching avatars, bios, or upload themes would materially strengthen attribution.
Review the breakout TikTok post dated 2026-05-17 for audience quality
That post reached 138,882 views and 18,079 likes, far above the rest. It is the best place to test whether the surge came from organic fan sharing or suspicious amplification.
Check the avatar image against reverse-image search results
The avatar is a stable identifying marker, and reverse-image results could reveal other accounts using the same image or variants of it.
Monitor this Tiktok account for changes
Track handle changes, bio edits, profile removals, and new signals without re-checking this account manually.
Risks & recommendations
Identified Risks
3 risks
⤷ 3 additional risks found in this analysis
Identified Risks
3 risks⤷ 3 additional risks found in this analysis
Identity exposure
LikelyThe account is public and clearly tied to a niche fandom persona, which can make pivoting to off-platform accounts easier if the same naming pattern is reused elsewhere.
Audience authenticity
LikelyOne post has a very large reach spike relative to the rest, so performance should be interpreted in context rather than as a sign of broad influence.
Platform credibility
Roughly even chanceThe account does not show obvious scam behavior, but verification on its own should not be treated as proof of real-world identity.
Recommendations
3 actions
⤷ 3 recommended courses of action
Recommendations
3 actions⤷ 3 recommended courses of action
Confirm platform ownership
3 stepsVerify whether the TikTok, YouTube, and any other related profiles are operated by the same person or persona.
Check for audience quality
3 stepsReview followers, commenters, and repeated engagement patterns to see whether the account has organic community activity or inflated reach.
Test for impersonation spillover
3 stepsSee whether the handle or display name is being copied elsewhere by unrelated accounts.
Data sources
Source Registry
6 sources
Assessment is limited to the curated evidence provided. No additional collection or direct platform interaction was performed.
Source Registry
6 sourcesAssessment is limited to the curated evidence provided. No additional collection or direct platform interaction was performed.
| Source ID / Type | Description | Grading (Src/Info) |
|---|---|---|
|
eval_1
social profile
|
TikTok profile metadata for @hachikujitsukii.
Coverage: Username, display name, bio, creation time, follower/following counts, verification flag, and profile settings.
|
SRC
A
INFO
1
|
|
eval_2
post
|
TikTok profile video/photo list for @hachikujitsukii.
Coverage: Eight recent posts with dates, descriptions, languages, and engagement metrics.
|
SRC
A
INFO
1
|
|
eval_3
website
|
Web search results for the handle and display name.
Coverage: Indexed TikTok pages and related search snippets.
|
SRC
B
INFO
2
|
|
eval_4
social profile
|
Cross-platform social search results for the query hachikujitsukii.
Coverage: YouTube URLs associated with the same name string.
|
SRC
B
INFO
2
|
|
eval_5
metadata
|
AI/deepfake detection check on the profile avatar.
Coverage: Low-probability AI-generated/deepfake signals and face-region detection.
|
SRC
B
INFO
2
|
|
eval_6
metadata
|
Social email finder lookup for the TikTok profile URL.
Coverage: No email recovered.
|
SRC
B
INFO
2
|
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