You are surprised to see a second pair of arms grow just below her arms. "But, how did you do that?" you asked
"It's just that a few months ago I discovered that metamorphic skills really exist and that they can be learned after I caught an art expert using that skill. We became friends and she has been teaching me to be a shapeshifter, now that I finally got it I wanted to share it with you." your girlfriend said
"So can you change your form at will?" you asked
"Easily, look at that." your girlfriend said and drew your attention to her breasts. Her breasts distanced from each other and a third breast grew between them before a second row with three more breasts growing just below it.
You...