He collects objects with traces of other people's actions left behind on them and seeks to uncover the presence within these actions. When collecting items left by humans, such as garbage, there is usually no sign of the original owner. However, these objects leave behind a “certainty” that someone was present and that some actions were taken at some point in time. Furthermore, each of these unintentional forms has a unique shape that no one else can intentionally imitate, and they hold the creativity that people express unconsciously.