My Telekinesis is a Little Too Heavy

I was sprinting for my life from a pack of feral, three-legged academy pugs. Not because I was weak, but because if I sneezed, my ancient gravity magic would flatten them into pancakes. In my past life, I was a battlefield god who arrived just minutes too late to save my little sister from a catastrophic dungeon break. Given a second chance at the Yildiz Institute, I've decided to lay low. My master plan? Pretend to be a pathetic telekinetic, silently build my strength, and avoid the military draft. It was going perfectly. Sure, I had to endure the constant mockery of Barlas, a walking jewelry store of a noble who bought his combat ranks. And yes, my unspoken, bittersweet crush on Shirin - who died fighting in my previous life - was as painful as ever. But I am shy, and fiercely stubborn. I wouldn't break cover. Then Barlas wouldn't shut up during our combat exam. The chiming of his bought legendary artifacts gave me a migraine. Annoyed, I slipped off my suppression ring to rub my temples, accidentally dropped it, and generated a gravitational field that crushed his million-coin armor into a tin can while flattening half the arena. Now the whole school is staring. Can I still convince them it was just really aggressive telekinesis?