thank you for liking hui! :D
for his good end: you need at least 6 of his good points
up to 4 points are available during his "storyline" convos, 2 during lunch, 1 in the kitchens, and 4 in the gardens.
after going through hui i noticed one good option wasnt correctly labeled! (so that there were only 3 points during his storyline.) if you redownload that should be fixed and theres up to 4 avaliable points there!