Oishi subsequently was in hiding with his family in Edo but, around January of the next year, was deceived by the former Shinsengumi member Ushinosuke MITSUI who was a friend of Oishi's and was captured.
その後、妻子らと江戸に潜伏していたが、12月頃、懇意だった元隊士・三井丑之助に騙され捕縛される。