Hal/Hachina/Souichi is a really compelling character. I'm really interested in if certain feelings or philosophies of knowledge carry over in his mind between memory loss / Kakerou imprinting, and I find it interesting that he generally speaks of himself as almost completely different people. "I was planning on continuing being the Hachina you know a while longer", "Tell me while I am Hal right now". It's almost as if he expects to become someone completely different in mind and body once he becomes "Souichi". Which, considering how he behaved in the Hangman gamble all the way up through his memory loss, seems like an accurate assessment. Souichi behaved completely differently from the Hachina and Hal we know from the Boat gamble and Portoporos. Maybe Hal already knows in his psyche that he will have to give way to Souichi again.