BUR #3662 has been approved by @evazion.
create implication kingdom_hearts_x_back_cover -> kingdom_hearts_x
create implication kingdom_hearts_x -> kingdom_hearts
create implication kingdom_hearts_dark_road -> kingdom_hearts
create implication kingdom_hearts_melody_of_memory -> kingdom_hearts
create implication kingdom_hearts_0.2_birth_by_sleep_-a_fragmentary_passage- -> kingdom_hearts
create alias kingdom_hearts_chi -> kingdom_hearts_x
create alias kingdom_hearts_mobile -> kingdom_hearts
Specific games/etc in the series. KH0.2 features characters beyond BbS, so I'd suggest a direct implication. There was a single image tagged kingdom_hearts_chi, which may still be searched due to full name "Kingdom Hearts χ[chi]". "KH MOBILE" was a browser platform with minigames, and predecessor of the chibi art in the Theatrhythm games, Re:coded's side mode, and KH MoM.
EDIT: The bulk update request #3662 (forum #174213) has been approved by @evazion.
Updated by DanbooruBot