Huh.
This is fun.
So old masters or shifu will always choose to have three or more core disciples (from most to least important; core disciple, disciple, disciple in name/ student).
Last time I checked Unsheathed, it was because the first core disciple is to be the mascot/ sect leader, the second one is to be the teacher/ researcher of the sect while the last is hatchet man/ bouncer.

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