I don't understand.KSLD is in english.(Or you talk about the menus?)
Yes, the menus are in another language.
EDIT: Oh yeah, when loading up the Together Caves by DataFlashBot, it teleports the player to a void, but on normal KS it doesn't, so I'm assuming it's something to do with KSO.
Aslo, cutscenes don't show at the start of a level, is this intentional?
EDIT (Again): I found that the player is teleported to a purple void screen when starting a new save, on any level.