Board Thread:Questions and Answers/@comment-16544958-20131218132129/@comment-32683655-20170725213504

Hakuyuu would be 31 and Hakuren would be 29 (around Kouen's age) at the start of the series. Hakuryuu was 6 when they died and 16 at the start of the series, meaning 10 years passed. Hakuyuu was 21 and Hakuren was 19 at time of death. Just add ten to both :)