# Week of Mon, September 28, 2026 · JapanTech

Sep 28 – Oct 4 (JST). Page: https://japantech.info/weeks/2026-W40/

## Mon, September 28, 2026

- [Tech Brunch Event](https://japantech.info/events/meetup-316537566/): Mon, September 28, 2026 07:45 JST, Beltempo, Hotel Metropolitan Edmont, 3 Chome-10-8 Iidabashi, Chiyoda City. Early brunch in Iidabashi on computational humor: NLP and comedy, humor theory, joke-generator demos, and humor datasets.
- [Invisible bias: effects on evaluation(Talk by Noa Garcia, The University of Osaka)](https://japantech.info/events/doorkeeper-199262/): Mon, September 28, 2026 17:00 JST, Online. RIKEN AIP online talk by Noa Garcia on hidden biases that skew computer vision benchmark evaluation.

## Tue, September 29, 2026

- [Tech Brunch Event](https://japantech.info/events/meetup-316732941/): Tue, September 29, 2026 07:45 JST, Beltempo, Hotel Metropolitan Edmont, 3 Chome-10-8 Iidabashi, Chiyoda City. An early-morning small-group brunch in Iidabashi for engineers and designers to share open source projects, tools, and licensing experiences.
- [High-Dimensional Structure Theory Team Seminar (Talk by Christophe Quentin Valvason, University of Geneva)](https://japantech.info/events/doorkeeper-199295/): Tue, September 29, 2026 16:00 JST, Online. RIKEN AIP online seminar: optimal transport methods for building nonparametric confidence intervals that hold up in small samples.
- [Tokyo Metropolitan Government Program | TIB CATAPULT & TIB Open Innovation Adoption and Promotion Program KICK OFF EVENT](https://japantech.info/events/peatix-5153279/): Tue, September 29, 2026 16:30 JST, Tokyo Innovation Base, 千代田区丸の内３丁目８−３. Joint kickoff of Tokyo's TIB open innovation program and TIB CATAPULT: 15 large companies and 6 new clusters present, then networking.
- [React Native Meetup #25 @mybest](https://japantech.info/events/connpass-404649/): Tue, September 29, 2026 19:00 JST, 株式会社マイベスト. The 25th React Native lightning-talk meetup, held at mybest in Tsukiji, with talks in Japanese and an after party.
- [Journey to the Centre of the LLM](https://japantech.info/events/luma-z0zqovpu/): Tue, September 29, 2026 19:00 JST, Shibuya, Japan. Tokyo Tech Talks #8: independent researcher Larry Richards explores LLM internals through mechanistic interpretability experiments.
- [Weekly Tuesday Meetup](https://japantech.info/events/meetup-316481621/): Tue, September 29, 2026 19:30 JST, Tokyo HackerSpace, Akasaka, 8 Chome−12−13 アゼリア赤坂 102. Weekly open house at Tokyo Hackerspace in Akasaka: meet members, see the space, and use tools as needed.

## Wed, September 30, 2026

- [Tech Brunch Event](https://japantech.info/events/meetup-316732944/): Wed, September 30, 2026 07:45 JST, Beltempo, Hotel Metropolitan Edmont, 3 Chome-10-8 Iidabashi, Chiyoda City. A small-group breakfast in Iidabashi on pure mathematics and its links to programming, sharing favorite theorems and proofs.
- [ITTC in Optimal Ageing and RIKEN AIP Joint Hybrid Seminar on Human-Robot Interaction and Digital Health in Dementia Care: Joint Insights from Australia and Japan](https://japantech.info/events/doorkeeper-199302/): Wed, September 30, 2026 13:00 JST, Online. Monash and RIKEN AIP researchers on robots, AI and digital health for dementia care in Japan and Australia.
- [Global Startup Ecosystem Meeting - Special Edition](https://japantech.info/events/luma-seaj0930/): Wed, September 30, 2026 14:00 JST, Tokyo Innovation Base 1F Square-2, 日本千代田区. Embassies and trade agencies present overseas expansion programs for Japanese startups, followed by one-on-one consultations and networking.
- [\[Explainable AI Team Seminar\] NLP for Mental Health: Risk, Promise, Responsibility by Prof. Irina Gurevych](https://japantech.info/events/doorkeeper-198953/): Wed, September 30, 2026 14:30 JST, Online. Online RIKEN AIP seminar: Prof. Iryna Gurevych on using NLP and LLMs for mental health care, with clinical grounding and responsible evaluation.
- [YOKOHAMA CONNÉCT #46](https://japantech.info/events/gatherus-933e0bd8-94d3-4ce1-a1fc-74d5c0fd624c/): Wed, September 30, 2026 16:00 JST, TECH HUB YOKOHAMA, 横浜ランドマークタワー, 横浜市西区みなとみらい2-2-1. Venture Café Yokohama's recurring evening of startup and tech sessions at TECH HUB YOKOHAMA, joinable in person or online.
- [Snack and Connect](https://japantech.info/events/gcal-1cqjeihehcok5mht496nifhtmg_20260930T1600/): Wed, September 30, 2026 16:00 JST, Shibuya Startup Support, Japan, 〒150-0011 Tokyo, Shibuya City, Higashi, 1-chōme−29−３ 渋谷Bridge B棟. Weekly drop-in startup networking over snacks at ShibuyaBridge in Shibuya, Wednesdays 16:00-18:00, no registration needed.
- ["IP Owner's Manual (Chizai no Torisetsu®)" Hands-on Workshop for Hardware and Robotics Founders: Turning Technology, Design and Brand into Weapons for Offense and Defense](https://japantech.info/events/peatix-5146306/): Wed, September 30, 2026 17:00 JST, Tokyo Innovation Base, 千代田区丸の内３丁目８−３. Hands-on IP strategy workshop for hardware and robotics founders: patents, designs, trademarks and trade secrets. TIB FAB members only.
- [TIB CXO Lounge ~ A Gathering of Startup CXOs Facing the Hard Things](https://japantech.info/events/peatix-5157095/): Wed, September 30, 2026 17:00 JST, Tokyo Innovation Base, 千代田区丸の内３丁目８−３. After-work networking at TIB where startup CXOs candidly share real management challenges like capital policy and team building.
- [Go Global Hub #1 Discover Global Challenges](https://japantech.info/events/luma-lvqtjqcq/): Wed, September 30, 2026 18:00 JST, Shibuya, Tokyo. Tokyo-backed cross-border co-creation workshop where mixed teams tackle global business challenges, with a keynote by Alex Odajima.
- [\[Pitch Speakers / Audience Wanted!\] TIB SANDBOX (Pitch Event) / For Idea- to Early-Stage Startups](https://japantech.info/events/peatix-5158961/): Wed, September 30, 2026 18:30 JST, Tokyo Innovation Base, 千代田区丸の内３丁目８−３. Seven idea- to early-stage startups give 3-minute pitches and get live feedback from VC commentators at TIB.
- [\[In person\] JJUG Night Seminar: Java 27 Release Event](https://japantech.info/events/doorkeeper-199212/): Wed, September 30, 2026 19:00 JST, ファインディ株式会社, 〒141-0032 東京都品川区大崎1-2-2 アートヴィレッジ大崎セントラルタワー 5階. JJUG night seminar on Java 27: talks on JEPs 527, 531, 532 and 533, from post-quantum TLS to Structured Concurrency. At Findy, Osaki.
- [THS "Nihongo Night" Open House](https://japantech.info/events/meetup-316497231/): Wed, September 30, 2026 19:30 JST, Tokyo HackerSpace, 赤坂8丁目12−13 アサレアビル102. Tokyo Hackerspace's Japanese-language open house: drop by the Akasaka space to meet members and see the workshop tools.

## Thu, October 1, 2026

- [Tech Brunch Event](https://japantech.info/events/meetup-316732947/): Thu, October 1, 2026 07:45 JST, Beltempo, Hotel Metropolitan Edmont, 3 Chome-10-8 Iidabashi, Chiyoda City. A small Lisp-themed brunch in Iidabashi with lightning talks, live demos and discussion on Clojure, Scheme, Racket and other Lisps.
- [🇯🇵🇺🇸Antler Japan - JPN7 Residency Program | Ask-Me-Anything WEBINAR (Info Session, JP/EN Simultaneous)](https://japantech.info/events/luma-vjoafvcs/): Thu, October 1, 2026 12:00 JST, Online. A lunchtime online AMA about Antler's JPN7 Residency: who can join, what founders gain, and live Q&A in Japanese and English.
- [\[Explainable AI Team Seminar\] Scientific Writing Strategy by Prof. Simone Teufel](https://japantech.info/events/doorkeeper-199341/): Thu, October 1, 2026 14:00 JST, Online. Online RIKEN AIP seminar where Cambridge NLP professor Simone Teufel presents a step-by-step method for writing convincing scientific papers.
- [Thursday Gathering #399](https://japantech.info/events/gatherus-1b93f8ae-afea-4a60-9855-f73088cf0f29/): Thu, October 1, 2026 16:00 JST, CIC Tokyo, Toranomon Hills Business Tower 15F, 1 Chome-17-1 Toranomon, Minato City, Tokyo. Venture Café Tokyo's weekly Thursday Gathering at CIC Tokyo: talks, sessions, and open networking for the startup scene, in person or online.
- [Kesennuma | Claude for Business](https://japantech.info/events/luma-claude-tpx0/): Thu, October 1, 2026 17:00 JST, 気仙沼 ▢ship（スクエアシップ）, Kesennuma, Japan. The first Claude Meetup in Kesennuma, Miyagi: practical knowledge for business owners on using Claude and Claude Code at work.
- [Gemma Meetup 2026 \[Road to DevFest Tokyo #1\]](https://japantech.info/events/connpass-405340/): Thu, October 1, 2026 19:00 JST, Google渋谷オフィス. A meetup on Google's open model Gemma, held at the Google Shibuya office as the first in a series leading up to DevFest Tokyo.
- [ProductTank Tokyo - Monthly Casual](https://japantech.info/events/meetup-313113477/): Thu, October 1, 2026 19:00 JST, Ten Cups, 150-0002 Tokyo, Shibuya City, Shibuya, 3 Chome−26−21 東急ステイ渋谷新南口 1F. Monthly casual networking evening for product managers and aspiring PMs at TenCups in Shibuya, hosted by ProductTank Tokyo.
- [Kaigi on Rails 2026 Side Event: Night Music Event Introduction and Roundtable](https://japantech.info/events/connpass-405115/): Thu, October 1, 2026 20:00 JST, Online. Online Kaigi on Rails 2026 side event with an introduction to an evening music event and a roundtable.

## Fri, October 2, 2026

- [Creative Session: Build & Share](https://japantech.info/events/luma-qmjah55t/): Fri, October 2, 2026 10:00 JST, Kita City, Japan. Friday morning laptop co-working for designers and creatives at a café by Jūjō Station, Tokyo.
- [AM I? — Film Screening & Conversation on AI Consciousness](https://japantech.info/events/luma-bk8bgzvk/): Fri, October 2, 2026 18:00 JST, Bunkyo City, Japan. Screening of the documentary AM I? on AI consciousness, followed by a talk with the director, researcher Cameron Berg and neuroscientist Ryota Kanai.
- [2600 Meeting](https://japantech.info/events/meetup-scjsgtyjcnbdb/): Fri, October 2, 2026 19:00 JST, beemars, Kabukicho, 2 Chome−27−12 新宿Leeビル 2 3階. Monthly 2600 hacker meeting of the Tokyo chapter, held in a reserved Kabukicho bar with open conversation about hacking and security.

## Sat, October 3, 2026

- [Coffee and Code](https://japantech.info/events/meetup-316719479/): Sat, October 3, 2026 10:00 JST, Starbucks in Roppongi Hills Lobby (THERE ARE TWO, PLEASE READ BELOW), 六本木6−10−1 六本木ヒルズ森タワー 1F. A casual Saturday morning coding meetup at the Roppongi Hills Starbucks: bring a laptop, share what you are learning, get help.
- [Code for Japan Summit 2026](https://japantech.info/events/luma-cfjsummit-2026/): Sat, October 3, 2026 10:30 JST, Chiyoda City, Japan. Code for Japan's annual civic tech summit on "Public Sector and AI", bringing officials, engineers and researchers together in Kudan.
- [OSS Gate Pass 2026 - OSS Gate 10th Anniversary Offline Conference!](https://japantech.info/events/doorkeeper-197019/): Sat, October 3, 2026 13:00 JST, 株式会社アンドパッド（住友不動産東京三田ガーデンタワー37階）, 東京都港区三田3-5-19. OSS Gate's first offline conference for its 10th anniversary, with 10-minute talks from open source contributors across Japan.
- [Tokyo | Claude Meetup for Healthcare Professionals](https://japantech.info/events/luma-claude-urwj/): Sat, October 3, 2026 15:00 JST, Minato City, Japan. Claude community meetup for healthcare professionals in Hamamatsucho, Tokyo: lightning talks on real Claude use cases and discussion.

## Sun, October 4, 2026

- [Haskell-jp Mokumoku Session #363 @ Online](https://japantech.info/events/connpass-408257/): Sun, October 4, 2026 13:00 JST, Haskell-jp Slack Workspace. Online Haskell co-working session on the Haskell-jp Slack: work or study at your own pace, share results at the end. Free, drop in anytime.