Alanna is crushing my abs

Description: Alanna has no mercy and while i'm sitting tied to the chair and my belly is stretched, she walks over me and sits on top of me and starts punching my belly hard. my abs stop her fist from penetrating deeper into my belly but after a little while my abs give way under her merciless punches and her fists sink into my belly without resistance. my whimper turns into a growl and i am completely powerless to resist. alanna enjoys every stroke she gives me and tells me how ruined and bruised my belly is now.