I know Jiwoo winning might be boring but Kaiden won against Astra and we can clearly see that they have the same technique since Kaiden knew what Siwoo will use against Jiwoo. Kayden's last move against Astra might be the answer here. It wouldn't make sense that Kayden didn't teach Jiwoo how to handle Astra's power since per Kayden's last word against Astra that he's seen they're powers and next time will not be same. Ofc Kayden thought a lot of test run on how Astra uses his powers and will teach Jiwoo how to counter each one.
I know Jiwoo winning might be boring but Kaiden won against Astra and we can clearly see that they have the same technique since Kaiden knew what Siwoo will use against Jiwoo. Kayden's last move against Astra might be the answer here. It wouldn't make sense that Kayden didn't teach Jiwoo how to handle Astra's power since per Kayden's last word against Astra that he's seen they're powers and next time will not be same. Ofc Kayden thought a lot of test run on how Astra uses his powers and will teach Jiwoo how to counter each one.