Our TG Caption

Your "date" with your sister goes on fine without her suspecting a thing about you. However now that you've met her yourself, she seems like a total prude. You decide that you could put her body to much better use so you wrap your arms around her and use the device to "implant your mind" in her.

A few seconds later you find yourself seeing 2 different perspectives as your consciousness is now in control of 2 bodies. It takes you a few minutes to get the hang of controlling both independently. You give the device to your new body and set out to get some "upgrades".