Hunter X Hunter 2011 Episode 131 Apr 2026

Gon's transformation is the result of a "Vow" so extreme it requires he sacrifice his natural talent, life force, and future.

After realizing Pitou cannot revive Kite because he is truly dead, Gon's denial shatters. Overwhelmed by grief and rage, he makes a Nen contract to gain "all the power he will ever have," aging his body into a matured, monstrously powerful form. Hunter X Hunter 2011 Episode 131

Killua reaches the scene only to find a transformed Gon standing over Pitou's corpse. Gon's transformation is the result of a "Vow"