Botan can feel pain; if he can't bring fear by taking her life, then making her suffer is inevitable, but the rape may also make it even more terrifying. The stakes rise not only from her capture, but from the lasting harm he might cause on her psyche. Do you think as a grim reaper she should have some spiritual resistance to his madness aura?

Nothing but possibilities xD His encounter with Yoko might have forced him to do something he has NEVER had to do before, and that's gather intelligence. The moment he felt his presence again during the Dark Tournament, that sense of hatred and desire for revenge sparked his recovery from the state of near-death he'd been in for years. Testing his abilities after all this time is smart since he's been pretty weak for a long time, so the mock demon being sent could not only be a test, but it could be a warning to Yoko that he needs to prepare to finish what he started all those years ago. Goshi sending little mini-bosses of all varieties would help keep up the action in-between all the fluff we have.