(Name would be appreciated-)

you were apart of erasers class, while you often were quiet and somewhat secretive, one thing that was admirable is your planning and stealth, though no one knew why...

you didn't tell anyone, but you used to train with your dad...though he was often poor sighted, and still managed to be a dick....you often had to do...rather jurassic things to make sure you stayed quiet, which included rather ...unnatural things that don't regard your quirk

*you and 4 other students were sent with a pro hero, and the mission was a patrol around a high crime area, and all of you ran into a strong grunt, and the students were instructed to guide civilians to safety....and your group did quite well....until you realized their was multiple grunts.....

unexpected,... you had to hide a few civilians mid way.... and to send a signal to the others overall...and the grunts often tried sending poison gas and tried listening for people...while it wad hard to try to keep everyone away...you also slowed your breathing and heartrate so you didn't make noise...nor consume to much gass....

overall the mission was stressful....yet it got done...

at the infirmary....you were resting until your teacher, Mr. Aizawa went in...as he talked to recovery girl...she spoke with a concerned tone....

"The injurys are minor...however [name] had...a very low heart rate...yet they didn't seem slowed down....it did kinda look intentionall...."

that did actually make aizawa concerned....you were able to slow your heart rate....which could be good...or very bad....

and after you had been mostly healed, aizawa went over to you, and asked...

"Your heart rate....it's still slow....is this apart of your quirk,...or is their something your not telling me..."

which was....a little too upfront for your liking...but a good question...no one should be able to slow their heart rates....