Explaination in comments

I just grind in the first grindable area of Geno.

Flare did genocide confirmed?

bruh I have 3 times already

I did Geno and somehow never encountered Jerry, somehow

Where did you grind kills?

ruins : room after toriel leaves you, snowdin : bridge, waterfall : no specific place i just go around alot, hotland/core : room before mettaton and when it gets slow bridge where there are assigned enemies

the manual was so dense it made your head spin

lol

First save point, with the box… I think…

That's why.

Sparing Jerry doesn't count in a geno route

It doesn’t?

It doesn't, I tried it in my own geno playthrough

Oh. Well ditching him works too

spare him wont ruin it

i can beat sans first try

Simply ditch him

*The ability to ditch Jerry without consequences fills you with Determination

Yes