WebX - Asia's Leading Web3 Conference, Tokyo, Japan, 2023

Blockchain Expo - NexTech Week, Tokyo, Japan, 2023

Gartner IT Symposium|XPO, virtual, 2020

Gartner IT Symposium|XPO, Tokyo, Japan, 2019

Gartner Security & Risk Management Summit, Tokyo, Japan, 2019

The 16th International Conference on Entertainment Computing 2017 (ICEC2017), Tsukuba, Japan, 2017

The ACM SIGCHI Annual Symposium on Computer-Human Interaction in Play (CHIPLAY2016), Texas, USA, 2016

Asia-Pacific Econophysics Conference 2016 (APEC SSS2016), Tokyo, Japan, 2016

The 12th International Marine Design Conference (IMDC2015), Tokyo, Japan, 2015

The 22nd International World Wide Web Conference (WWW2013), Rio de Janeiro, Brazil, 2013

The 19th ISPE International Conference on Concurrent Engineering (CE2012), Trier, Germany, 2012