And going in details; Yoshiki's father committed a suicide by slitting his wrists, and Yoshiki was the one who found the body. I can't even imagine how traumatic it must have been.
And by the way, I think it's pretty weird that hide died at the same age as Yoshiki's father. I don't believe there is any kind of bound between those two deaths, it's just.. weird. (Hope you got my point.)