World Trigger Episode 50: Invisible Assailants
Episode 50 of 73 of World Trigger, aired October 17, 2015, 25 minutes. Available with English subtitles and dub where released.
Episode summary
Zeno, a refugee from Elgates, begs Yuma and Osamu to harbor Lilith and him during their stay in this world. With Chika taken hostage, Osamu and Yuma have no choice but to agree. As they return to the Shizuka City retreat, an unseen assassin strikes!