Dragon Ball Super Episode 59
Protect Kaioshin Gowasu: Destroy Zamasu!
Whis gifts Gowasu with rice cakes and says that he and the others did not mean to disturb Zamasu and him. They leave shortly after. While they are in space, Whis uses his staff to eavesdrop on Gowasu and Zamasu. They watch as Zamasu kills Gowasu. Whis turns back time so that Goku can save Gowasu. Zamasu claims he did not plan on killing Gowasu, but Whis tells him otherwise. Angered that his plan has failed, Zamasu tries to kill Goku. Beerus saves Goku and kills Zamasu. With the present day Zamasu killed, Goku and the others decide to track down Goku Black. In the alternate timeline, Zamasu and Goku Black are discussing Goku Black’s power.