User blog comment:Jojo-a-gogo/What do you think is the saddest moment in Hunter X Hunter ?/@comment-5447633-20120826133125

my sad momento was when gon and killua lose the match after a hard training and gon said : i did'nt know that being weak is so painful (while crying then killua drop tears because gon isnt able to use nen for 30 days)then killua said that he will protect gon whatever it takes

that was really heart breaking T^T killua is really a good friend