User blog comment:B214/Question and Answers 6/@comment-118.172.205.177-20160711144501/@comment-24.113.252.213-20160712044120

Then how do we explain Vali activating the JD on his own? He seems experienced in using it (he stated that he had to use it against Tobio Ikuse and Fenrir), and I doubt he is super angry everytime he activates it. Although I do recall him activating it when Cao Cao redirected one of Vali's attacks to hit Kuroka. But he still activated it himself.