Nidhoeggr said:
So, Guts and Caska's child comes to the rescue...interesting development. As for Isma, chances for her joining the crew are increasing.
That is definitely not their child.
Guts and Caska's child... or should I say embryo was sacrificed in order to bring Griffith into the human world (with the help of big Behelith). Evidence of this is found when Guts and Zodd are fighting each other while Griffith is watching in order to see if he has truly moved on (as in if he still has feelings from the past). Casca sees Griffith and hugs him and after he lets go of her he says something like 'his' blood stops me from doing anything which means that either A, Guts child is a part of Griffiths consciousness or B, Griffith hasn't been able to get over the past.
Also love how the mangaka is able to portray Guts 'insanity' through his Berserk armor and the demon that is shown.