49, so he mostly camps in the hideout studying the new stand technique the antagonist appears to be using.

The main antagonist?

That's Part 10, which takes place in 2021, jumping to 2029 at the very end, but Joot isn't in the end.

What? I meant does he study the antagonist's stand?

Part 11 takes place in 2063, and Joot is not in it, but one of the characters from Part 10 is in it, the main character happens to be his granddaughter

Part 11 takes place in 2063, and Joot is not in it, but one of the characters from Part 10 is in it, the main character happens to be his granddaughter.

He studies the victim's arrow piercing wound.

So does the main villain travel through time and Jotaro tries and studies these strange occurrences?

Joot notices that it healed erratically, almost as if he pierced the same person twice before it healed, this led to wonder why he did that.

Eh, never really got into the spinoffs tbh. I tried reading a few but the only one i actually finished was Purple Haze Feedback