>>280441036
His thing used to be well mannered/obedient on a surface level and not really knowing how society worked and being unstable/easy to flip his switch into killing mode, but all of that was basically handwaved away offscreen. He's probably the least consistently written character in the series, which is saying something. Remember when he randomly started acting like some generic shonen rival edgelord going "HEH, KOGA, THE STRENGTH YOU GOT FROM THOSE SO CALLED FRIENDS OF YOURS... IT'S NOT TRUE STRENGTH, HEH", despite like a week earlier going up to Kiryu and asking for training.
Sandro made it seem like all of his conflicting socialization was about to come to a head when he went back to the inside to meet Mukaku, and then that meeting just got offscreened and skipped over in terms of consequences. He wakes up after they save him from the rape dungeon, goes "oh you're not my grandpa anymore, I guess :(" and then walks off without a second thought, and all of said instability and internal conflict vanishes on the spot.