Chapter 106

A Heart Tested is the one hundred and sixth chapter of the Black Cat manga and the third chapter of Volume 12.

Plot
Sephiria Arks makes an offer to Kyoko Kirisaki: Either become an eraser for Chronos and live, or be its enemy and die. Kyoko is unsure what an "eraser" is, so the woman explains that they are assassins. Kyoko refuses, as assassins are killers and she promised her "Master Black" to never kill again. Sephiria gives the girl to rethink her decision, but Kyoko is adamant on keeping her promise, much to Rinslet Walker and Jenos Hazard's surprise. Sephiria smirks and destroys the gravestone she created, stating that she believes her. Rinslet and Jenos understand now that this was just a test. Sephiria reveals that Jenos informed her about Kyoko's history, including her promise to Train Heartnet. She goes on to say that had Kyoko accepted the offer to become an eraser, the Number would have killed her. She tells Kyoko to promise to never again fight Chronos and they in turn, will ensure her safety.

Train, Eve, and Sven Vollfied arrive at Tearju Lunatique's house. Train rings the bell, but there is no answer. Train checks the door if it is locked, which causes it to open. A foul odor emerges and Sven assumes that an experiment has gone wrong and rusges in to save the scientist, only to see her faring well and holding a frying pan. Tearju explains that she was only cooking, something Train and Sven find hard to believe, and is surprised to see Eve.