Yakuza [Chicago 1949] #14834738

members (measured 3 Nov 2026, 05:26 UTC)

12 May 2022

created (per Roblox API)

10 August 2026

first measured by this register

Description

The Matsuba-kai is a member of a yakuza fraternal federation named the Kantō Hatsuka-kai, along with four other Kanto based yakuza syndicates, the Ichiwa-kai, the Inagawa-kai, and the Takahashi-Ikka.

Written by the group; not a statement by this register.

Membership history

Growth

Growth history is still building. We hold one measurement for this entry. A trend needs at least two, taken days apart — so this will fill in on its own rather than being estimated. We do not publish numbers we have not measured.

Measurement log — every members count we have recorded
Measured (UTC)	Members	Change
5 Sept 2026, 14:21	1	first reading

Daily: the last measured count of each UTC day. Days with no new reading have no point. The full per-reading record is in the CSV and JSON downloads below.

Ownership

Owned by Mouse (@PoTheWoee) as measured.

Groups seen changing owner — the largest ever handed over and the most recent — are on the ownership transfers board.

Members we’ve seen

Mouse (@PoTheWoee) — Oyabun おやぶん (rank 255)

A sample — only members this register has independently measured, highest rank first. Not the full roster.

Rank structure

Oyabun おやぶん1

Wakagashira 若頭0

[HR] シャテイガシラ0

[HR] 彩子小門0

[MR] シンギイン0

[MR] 快慶0

[LR] ビッグブラザーズ0

[LR] ビッグシスターズ0

[LR] リトルシスターズ0

[LR] 弟0

Member1

Guest0

Roles and per-rank member counts as Roblox reports them (rank 0 = guest … 255 = owner).

Open data

Download this group’s measured record — free to reuse with attribution: membership history (CSV) · full record (JSON)

Each file carries its licence and retrieval time inside it, and is generated from the same measurements shown above.