Following the previously reported staff and cast reveal with the third teaser, the official site for the K Return Of Kings TV anime has posted a fourth teaser featuring the Silver King, Yashiro Isana as well as a new key visual featuring the Scepter 4 police enforcers.
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The official GoRa Twitter account has also announced that the "100 Days x 100 Visuals promotional Twitter campaign will return beginning late next month through the official site and the Animate chain, with a new book compiling the illustrations from the campaign being published by GoRa shortly after the campaign's completion.
In addition, the official site has also announced details on three new NicoNico Live events that will run from July to September featuring the series cast, culminating in a preview screening of the new series on September 27th, to be held at the Pacifico Yokohama theater with cast members Daisuke Namikawa, Mikako Komatsu, and Kenjiro Tsuda scheduled to be in attendance. The series will premiere in October.