Gon recovered from his injuries and started training Nen along w/ Killua and Zushi from Wing, Sadaso, Riehvelt, Gido kidnap Zushi, Killua agreed to fight Sadaso to leave Zushi alone, Sadaso broke his promise and played dirty tricks Killua threatened him, by the day of their battle came, Sadaso leaves the Arena and lost by default, giving Killua his first win in the battle of the 200