In 2020, Taiga Kobayashi flew to San Francisco from Tokyo and moved to a co-working space to do work with excellent people who came from all over the world. However, due to the new situation with COVID-19 and isolation, mutual communication in the co-working community has become quite limited. Then, he joined Slack groups to make networkings. When he posted his self-introduction, even though there are 20,000 people in the group, he got no response. Also, he could not send a DM to make networkings since he did not know who wanted to make networkings. Then, he found out there was no way to do networking in Slack groups.