- 2,008
- 2,407
They need concentration because their reactions don't scale to the timeframe as Arkenis has articulated, someone like Sukuna has one of the best understandings of Jujutsu in the series and has an extreme degree of CE control, if he had FTL reactions then landing Black Flash at will wouldn't be difficult.You need great cursed energy concentration and control to be able to pull it off.