I've played through to the end of version 23.2, defeating all defeatable quests, completed all of the lewd sequences, and all of the mental changes. I cannot find how to get the John Rising quest to start. The hint for the lewd scene is nice, but doesn't help with finding the underlying quest. What am I missing?

I need one last martial skill to teach john, which one is easiest to get? I already got pierce and defense stance to 2