why does it says end? it is not complete, the story has just started !!

Sometimes it just means that it's a full chapter.

it's just works like this,
there are two volumes and there are 4 chapters/volume so they work on it (translating it) and give marks on them like
Ch.1, Ch.2, Ch.3, Ch.4 (end) with this 'end' mark they can continue to volume 2
n that's it sorry if my explanation was confused you -_-")/
and thanks