The characters in this game do not move their mouths when speaking, this is something that From Software is known for.
The name Utsuki means serious-minded, responsible, and stable. This name, when combined with the last name, can frustrate happiness, contentment, and success, as well as cause health weaknesses in the fluid systems, and worry or mental tension.
The game play in this game can be viewed as a precursor for Dark Soul's combat.
The main form "Kuon", which means "eternity." Separately, the two kanji mean "long time" and "distant."
Apparently during the making of the game some "supernatural" things occurred in the office. The director claims that it was just people's imagination.