The coronavirus (COVID-19) problem is a complex problem that spans a wide range of fields including medicine (epidemiology, public health), risk science, informatics, sociology, history, urban planning, and architecture. We will consider the living environment in an emergency from the perspective of “if a disaster occurs under the circumstances of the spread of new corona infection”, and introduce related information resources and literature. I think it is important to acquire the attitude and method to continue to think about how to “rightly fear” the risks around us and “do our best” to deal with them. In that sense, what is essentially important may be the same as it was before the new Corona. I hope everyone will be a glove hint to face the current situation.