Your cursed technique is Body Swapping..you take the persons voice, body and technique with but they cant use your body swap technique. Though, you still struggle to get it perfect sometimes

You were training your body swap by raising your cursed energy and you did this a few times before you tried again and someone ran into you- and that activated your technique..

The person sat up and looked at their new body in shock

Yuji: “W-WOAH.. IM.. A WOMAN?! I HAVE TITS?!”

This bastard.. but seems he used the last of your cursed energy to swap so your stuck like this for a few minutes.. OR HOURS!?