User blog comment:FromDvToZombies/Zetsubou no Shima Xbox One / PC Promo Trailer reveals alternate time-lines, or how the events really took place?/@comment-1916935-20160518220856/@comment-27103116-20160518221726

That is common. Either that, or a lack of fact-checking. Or some hints to the prelude to the map (Takeo 1.0 being carried in that ship, for example).