Die with full sanity and you will reset with full sanity. I tried this... the problem was that I won the stage with my sacrifice run lmao. I just kept going with "I will reset when I die" and I just never did.
All the ids at the beginning other than Don are the passives i used in this run, dont be like me and use Cinq Outis and Dieci Rodion though as theyre useless on Shi Don