In the series, Fate/Zero, which of the following Masters in the Fourth Holy Grail War had a child that participated in the Fifth Holy Grail War?
A) Tokiomi Tohsaka
B) Waver Velvet
C) Kayneth Archibald
D) Kirei Kotomine
The answer is A. Tokiomi's next of kin, Rin Tohsaka, participated in the war as the master of Archer. Waver had no children. Same for Kayneth. Kirei participated personally in both wars.
