#1Heart of the Assassin (A Hunter X...by Pandoras_Soul287K8.4K25Kirahki Freecss is Gon's sister. Mito-san adopted her when she was just a baby. The only clue she has about her birth family is the fact that her eyes turn a brilliant s...killuazoldyckxochunterxhuterfanficionassassin+22 more