why aidou didn't?

i am wondering why aidou didn't confront kain,ruka or seiren(if she is in academy.she got injured so she must be in academy)about his father's death?
rukain or seiren maybe know something related to it.seiren may not tell him but ruka,he was her uncle.if she let him die just for kaname's sake,hino butchered a really good character.ruka is a strong girl.she surely had deep love feelings for kaname but that doesn't mean you go killing your family for it.
and kain,he let his uncle die just because ruka was letting it.this is pathetic.
rukain are good and sensible vampires.so please solve this query of mine.

I think the reason why is cause it could cause them to die. I believe the reason his dad died was cause he knew to much about kaname, iow he knew kanames endgame which kaname needed to keep secret till the end, so he killed him to keep him silent. I belive he knew all along what kaname was going to do, which is why he asked if yuuki could stop him if she needed to.

RIchard wrote:I think the reason why is cause it could cause them to die. I believe the reason his dad died was cause he knew to much about kaname, iow he knew kanames endgame which kaname needed to keep secret till the end, so he killed him to keep him silent. I belive he knew all along what kaname was going to do, which is why he asked if yuuki could stop him if she needed to.

if that is the thing,kaname will definitely die in the end.

It's been kanames intention to die in the end since the start, I thought that is the one thing both zeki's and yumi's agreed on. Every thing supports this, kaname turning every one into his enemy, pushing yuuki away, sowing seeds of anger and hatred inside zero. Kanames final endgame is to die, but he is taking all the pb's except yuuki with him. Kaname as the king is not able to allow him self to die till he removes the taint from his kingdom ensuring a future for both his human and vampire citizens, the taint is the pb's and the final taint in his eyes is him self.

What yuuki and zero are suppose to do is ruin his endgame and stop him from killing the pb's and him self. If kaname dies he wins even if some pb's are still alive.
Kaname is a king in the truest since, he will stain his hands red even with the blood of the Innocent if it means his kingdom survives. Most people don't like to see a king in such a way but it is some thing that is required for a king to ensure his kingdom lives on.