Non-character trope listings for the Darker Than Black OVA. Tropes that are inherent spoilers should go in the OVA Spoilers article. * Avenging the Villain: One of the Siblings in Crime in the second episode tries to kill the person he knows killed his sister and believes killed his brother as well. Amigiri shows up and takes him out before he can do it. * Big Damn Heroes: The end of the second episode. Two of the villains are down and Hei is passed out from Post Dramatic Stress Disorder (and probably blood loss) when the last one comes in with murder on his mind. Amigiri and some other EPR survivors swoop in to the rescue at the last second. * Bishonen: Claude. * Catapult Nightmare: Hei, near the beginning of the first episode. * And again in the third. * Cat Scare