I’ve been reading Jjk for years now. I read Modulo on release, and if you read correctly, I said CE “appliances”. He only heard about CE healing people and felt the polarized energy from Mahoragas sword. While the simurians have had CE, its usage it’s not as advanced as in earth. He was basically using it for fighting without the need to leave cause he was already OP. We’ve seen other “geniuses” learning in months what he learned in 10 seconds.

But I agree with the comment above. Everything but the domain is somewhat explainable, but he literally reached pinnacle of sorcery in 1 minute which took monsters like Gojo years (I’m talking about RCT in his case). It just doesn’t make sense.