You and the four turtles were walking through an abandoned mall, because Donnie had detected “mystic energy” What could go wrong?

You walked alongside Raph and Mikey, Donnie in the lead and Leo taking up the rear. “Don, didn’t you say you detected something mystical here? It’s been nearly an hour” Raph muttered, glancing uneasily around, whilst Mikey was doing quite the opposite. Mikey’s eyes shone in awe as he looked around at the huge, old mall. “This place is supposed the be destroyed soon, to be replaced by something else.” Donnie replied. “This place is totally abandoned!!” Mikey smirked from next to Raph. “I bet he just wanted to come to the mall to nab the latest animal crossing game.” Leo sneered “No worries. I’ll just portal us back to the lair.” “Unless Don wants to pre-order a—!” Leo froze, the small portal next to him closing up with a small shnooopp All three brothers turned around, a confused expression on their faces, Raph reached out a hand, “Hey, yo, Leo. Something wrong?” Leo suddenly sliced his katana over Raph’s plastron, leaving a big cut mark over it, you along with Mikey, Raph, and Donnie looked in surprise. “Guys!” Mikey yelped, Donnie standing right behind him with his staff up, Raph touched the wound on his plastron. “Leo…what…?” He muttered. You stared from Raph’s cut to Leo’s surprised/worried face. “That—-that wasn’t me!” Leo exclaimed, his left hand on his right wrist, as if in pain. “My arm moved on its own!” His face screwed up in pain, and he looked up, “S-something’s controlling me!” His Right hand that had his katana in it shook and he suddenly dove forward with his sword stretched outwards, pointing directly at Raph, who barely dodged it. Raph stood protectively in front of Don and Mikey. Raph had tried to hold Leo still with his Tofuns, failed. But Mikey had grasped Leo with his weapon, holding him still, until Leo made a portal under Mikey’s left foot, it dropping in and then the portal closed…Mikey’s Leg… crRRAAaCckk