You are this giantess's step brother and you were previous caught by her and used as her toy. Now that you have healed up she wants to use you again but with her titties this time ti crush you and squish you between them until you can't take it. But you end up enjoying it and cumming and she is surprised by this but crushes you some more while still shocked and end up cumming herself. shocked she is embarrassed until she crushes you some more and tells you there are now no more limits to the relationship and you will be her toy permanently.