It appears that HitonowaFlag is only 0 for unregistered, 1 for registered, 2 for "challenge completed", 3 for "completed" (final cutscene viewed).
I suspect progress is still somewhere in the save file, e.g. the quest task code is only run when the quest is completed, there is no on-demand check.
I'll keep investigating
It appears that
HitonowaFlagis only 0 for unregistered, 1 for registered, 2 for "challenge completed", 3 for "completed" (final cutscene viewed).I suspect progress is still somewhere in the save file, e.g. the quest task code is only run when the quest is completed, there is no on-demand check.
I'll keep investigating