Inotashi

Theory Time: what if the reason Woo Jae became a bodyguard is because Hana died in the Original Timeline and Woo Jae used the camcorder and travelled back and lost to Haru in the Judo match and decided to become a bodyguard to protect Hana. He dies in her place and that’s why he saved a video confession before the award ceremony coz he knew he would die. So in reality the timeline in Ep 1 is the second timeline and not the original one.

I think coroner feng is the tailor/Yesha

No both the princes (yan Che and yan qi) are sons of the crown prince and are of royal blood as they were born before the switch as both princes seem to be older than Yan li. So even if the current emperor is Yan li’s father in disguise both Yan Che and Yan Qi are of Royal blood by the late crown prince.

Really?! Is yanli’s father trying to make yanli’s crown prince

Exactly.

What if yanli’s father is the current emperor. He killed the crown prince and impersonated him to become emperor.