Kabaneri of the Iron Fortress Episode 12: Kotetsujyo
Episode 12 of 12 of Kabaneri of the Iron Fortress, aired June 30, 2016, 25 minutes. Available with English subtitles and dub where released.
Episode summary
Biba's plan, Mumei's Nue transformation, and the influx of Kabane were all too much for Kongokaku to withstand. That is when Ikoma arrives. Having modified his body once again, Ikoma enters Kongokaku in order to rescue Mumei, despite the danger he will have to face.