Working with a Cat

Rachel has a good reputation for being a sweeper, even if she's... small (is someone tells that, you're messing with her). In the present she's Sven Vollfied's partner. On a mission she meets one of Chronos best erasers: Black Cat, she's determined to track him down and to put him on prison. But when Train Heartnet quits being an assassin, will she cooperate with him or beat him?