Then he felt a gnawing in the back of his head.  A small inkling of a voice, someone calling him.  He's experienced this voice before.  Back when you were a child and you were still naive enough to try and force your way into your father's view.  Only to be pushed aside as a rejected innocence.  This was you.  
                          
He didn't hesitate to sink into the walls, travel the shadows, zooming through the ceilings of the main building to slip into the small room where the summoning was held.  He wasn't allowed in here, obviously.  Yet, when he popped out of the floor and saw you on your knees, hands gripped so tightly onto the wooden altar the wood because to chip and breathing like you were drowning, all the rules of this room were immediately disregarded.
                          
"Y/n!"  He dropped his back that was on his shoulder onto the floor at his feet as he scrambled to kneel beside you. He touched the back of your neck, rubbing it and almost tempted enough to search through your memories to see what could've happened. You just sat there.  Motionless and lost.  "Y/n, what happened?  Could you not summon one?" He looked briefly up at the spellbook. You shook your head.
                          
"No," you breathed out, "no, I did.  I just- he," you cut yourself off.  Yoongi rubbed at your neck still, calming you.  "He rejected me too," tears bubbled over your waterline as they dripped off your eyelashes onto the hard floor.  Yoongi grew twice as worried.  You've always managed to handle rejection in a mature way, in a way that still kept you coherent and stable.  You'd accept it.  But, this was too much for you to handle right now.
                          
Knowing your whole life your father rejected you, so you tried your damnedest every day.  Doing anything and everything you could to get strong to progress further and further.  Hitting a goal you set so high just for the chance for him to see who you are, only for that one chance to also reject you.  It was like a punch to the gut.  Or maybe, more accurately, a punch to the jaw.  It left you fuzzy and unsure.  
                          
Yoongi took this in as he looked at your shadow beneath you.  He sighed.  
                          
"Sorry 'bout this," he said before he changed.  He dipped into your shadow as your body froze, hiccuped and you squeezed your eyes shut.  
                          
"Yoongi!" You hissed as he just hushed you.  
                          
"Let go," he told you as you did.  When your eyes opened, they were calm and not fear-stricken.  That was because you were sleeping.  Yoongi successfully possessing your body.  You hated when he did this.  He used to do it often to sneak into your house at late hours for a snack or just because he could.  He'd possess people who often picked on you.  He's even possessed staff at your home to bring you ice cream when they were being unlawfully rude to you.
                          
He stood your body up as he took a breath.  He straightened out the robes you wore on your body before he sauntered out of the room and back to the chair in the front where you were designated.  It would look too suspicious if the number 1 ranked in her class didn't come out of the room.  So, he'd control your body and sit through the rest of the ceremony as you slept deep in your mind.  
                          
He was angry though.  Because there's a little trick to possession he's never told you about.  When he possesses someone, he has direct contact with their memories, be them long since past or recent.  He did his best to remain calm to others as he watched your mind play over and over again the moment you summoned your Familiar and the moment they rejected you.
                          
The moment Jungkook rejected you.  
                          
After the ceremony, Yoongi- still in control of your body as your subconsciousness slept- excused yourself and took you back to the dorm.  When he shut the door to the dorm you both shared, he easily slipped back out of your shadow.  He quickly caught your body that slumped over before he hoisted you up and dragged you to your room to put you on your bed.  Sighing, he rotated his shoulder as he put a blanket over your form and left your room.