World Trigger Episode 15: Black Trigger, Fujin
Episode 15 of 73 of World Trigger, aired January 24, 2015, 25 minutes. Available with English subtitles and dub where released.
Episode summary
Yuichi finally reveals his "Wind Blade" technique with the Black Trigger. As his battle with A-Rank vets Kei and Soya reaches its climax, the Arashiyama Unit shows up in support and clashes with the Miwa Unit. Who will emerge victorious?!