How can we bring back a sense of festiveness in this world of COVID-19? We are now in a society where people are divided and connectivity via bland online meetings is becoming the norm. In this session, I will explain how the Eastern festival culture can bring about a sense of festiveness and conviviality in the internet community. I will delve into case studies such as festivals after the Great East Japan Earthquake 10 years ago as well as discuss user interfaces and knowledge about media art that can improve online experiences.