Original Japanese title: Kokoro no Ishi (心の石).
In order to get out of the barrier, Boruto desperately searches for his heart of stone, but he has little success. Then he encounters Sekku, one of the Genbu Three that participated in the recent Chunin Exams. Sekku has also come to the training ground in order to find his heart of stone. Seeing their predicament, Ohnoki tries to help them.