In the Tenmei Era when Okitsugu TANUMA involved in the shogunate government, due to political instability that existed at that time, many Mushuku flew in and around Edo and became to commit various atrocious crime.
田沼意次が幕政に関与した天明年間には折からの政情不安により無宿が大量に江戸周辺に流入し、様々な凶悪犯罪を犯すようになった。