Thread:Harostar/@comment-28815154-20160714184201/@comment-10733658-20160714201205

Well, there is no other option but Ukaku.

In terms of Blood Type, it isn't 100% certain it is O.

Arata would have to be Ao to have kids with O blood type. Which means Hikari is either O or had a recessive O as well.

So again, no.