It's a possibility. It's a possibility a lot of people dont want since they are eager for the reveal but it would fit the dark nature of this story and it is definitely something Seimei would do. He is possessive of Ritsuka. If his partner hasn't already been killed when s/he is revealed I would say expect an attempt at the very least. No way is Seimei going to just sit back and do nothing.
When I die, I will haunt my relatives forever due to not knowing what happened at the end. My grandkids will probably never find out, who is Ritsuka's fighter...
This has been on my mind since it's been revieled that Seimei is still alive, but isn't there a possibility Seimei killed Ritsuka's fighter/ Dind't Seimei trick everyone into believing he was burned alive? What if he actually set Ritsuka's fighter ablaze? If i remember correctly they actually burried a body?...