Can you go from pure black to pure white in one playthrough?

[Jables4889]

I said no to the monument (default answer and it’s stupid) so I could get the ally ring. I went ahead and did everything else for playthrough 1. How hard is it gonna be to get back to Pure White Character tendency?

[Mirrors1118]

You can either kill black phantom npcs in pure black world tendency in each world to get you to pure white character tendency.(requires 7 Stone of Ephemeral Eyes for one world to reach PBWT from PWWT). A much faster way is to boost this with someone online by letting them invade you and killing them. Each kill shifts your character tendency to white.

[technole]

Without online 'boosting', it would take 2 playthroughs to get back to pure white character tendency from pure black because there is only +5 available per playthrough.

 

The fastest route is not to go negative on character at-all until getting to pure white. Don't screw up the monumental conversation, say yes, and to get to pure white, get the ally ring. Then turn kill everything you need to get to pure black and foe ring before NG+. Keeping in-mind doing any successful black phantom invasion is a negative, and if you do any of that you'll have to make it up online or NG+ (and defer the pure black stuff until then if you want less hassle at that point).