Miracles wrote: ↑Wed Jun 21, 2023 2:53 pm
Didn't Vegeta say Goku has a bad habit of holding back in his first fight with Black?
But Zamasu revealed to Goku that he killed him and used his body to slaughter his family, he even gloated about it. Zamasu made Goku even more angry and salty than Frieza. Goku tried to spare a defeated Frieza, while Goku went for the kill against a seemingly defeated Black.
It is OOC for Goku to hold back against Zamasu, the villain who killed him, stole his body, and used it to mercilessly slaughter his family. After Goku learned what Zamasu did, he was no longer holding back.
As to why he never used Kaioken against Black, it is easy to see why. Goku has learned one thing about Black, he knows that he always grows stronger from a massive beatdown. On top of this, Black can simply use Immortal Zamasu to tank Kaioken attacks for him and Kaioken lasts very short time.
SSB Kaioken was originally a very rare, life-risking move. Toei Anime even included an episode where Goku had problem with ki strain after using SSB Kaioken against Hit. ToP arc ruined this narrative by having Goku use Kaioken ever 10 minutes, but it is irrelevant to the original intention of the writers. SSB Kaioken was supposed to be a very extreme move, and the fact that Goku used it against Fused Zamasu is an outlier. It simply means that Zamasu was so almighty, so invincible, that Goku had to use his absolute most extreme move (and indeed Goku shattered his legs while using Kaioken against Zamasu).
ToP arc cheapened SSB Kaioken, it was not a cheap move at all in previous arcs. It was an extreme move.