Chemies Origin! I Understand

The Dark King, Gigist, finally makes his move. Gigist finds a mysterious egg inside Houtarou. To get the "egg" he has been looking for, Gigist begins his invasion to Houtarou and his friends!. Then a shocking truth is revealed: what are the "true forms" of Chemy and the others?. This is only the beginning of the worst-case scenario drawn up by the Dark King.