"What's happening!?" Ruy yelled as he watched the horror-show of his brother twitching and screaming in the cradle of light blue electricity.
"The magic-levels rose to uncontrollable levels! The horn is overheating and spreading unstable magic around itself! Sir! I said it was not safe to test the horn yet!" the head scientist shouted over the blaring alarms to Crowned Diamond, who did not respond. All he did was to stare at the small yellow earth pony twitch on the air, screams going quiet as his throat was going sore. His face was twisted in horror and pain, but whether this was because of the sight of seeing his son in pain, or the knowledge of making a mistake so grave, nopony knew...
"You KNEW this could happen!?" Ruy snarled at his father. "You KNEW it was unsafe! And yet you still threw your OWN SON to it like he was trash!"
Crowned Diamond didn't know how to answer. Before he could form one word, Ruy had already turned his back to his father.
"You're a monster. I promise mother I would protect Shô, but I never thought she meant from his own FATHER!" the white unicorn shouted again, heading to the door of the testing-area.
"Ru-Ruy-kun!? What are you doing!?" the head scientist shouted upon seeing this, and this snapped Diamond out of his trance.
"Since none of you are doing anything to save my brother, I might as well do it myself!" Ruy yelled, opening the door with fury, only to be overwhelmed by the magic gushing inside.
"Ruy! You stay right there!" Diamond tried to shout with the authority he had used to boss his sons before. But His voice was weak compared to the screams of the small earth pony. And Ruy could not ignore them.
"Diamond, Shô is your SON! But if you are so ready to throw him away..." Ruy snarled.
"Then you shall lose us BOTH!" and with that he dashed inside the test-cube, galloping towards his brother.
"Ruy-kun!" the head scientist shouted after him. But when the young stallion showed no intend to stop, she continued: "Remove the horn off him! If the horn doesn't have a vessel to suck magic out of, then it should turn off!"
"What are you doing!? STOP HIM!" Crowned Diamond shouted.
"Kongō-sama, your son has better magical abilities than any of us compared. Above that, he has the motivation to saving his brother that the rest of us lack. Including you..." that last part was spat out so venomly that Crowned Diamond's rage vanished. The head scientist knew she might get fired for that, but at this point, she would probably walk out anyway.
"SHÔ!" Ruy shouted as he tried to reach his brother with his magic. But there was some kind of protective shield around Shô. Ruy didn't have much time to think, so he simply jumped towards his brother. The force-field let him inside, and Ruy assumed it was only protecting Shô from magic. But when he finally got a hold of his brother, he felt the pain the earth pony must have been through this whole time. Electrical currents going through his whole body, each of his mucless was twitching and his blood felt like it was boiling.
But Ruy would not let the pain he felt overwrite his own head. He had to save Shô! He was the last piece of family he had left! He hardly counted Crowned Diamond as anything but a monster who was ready to get his brother killed for profit! He had made a promise for mother! He would either save Shô, or die trying!
Now that he was inside the force-field, he tried to use his magic again, and this time he got a hold of the horn. But with that came a new sensation. Now instead of inner feelings of overloading magic, he felt his skin burning. The horn was attacking him, trying to protect it's host.
'Mother, give me strength!' Ruy thought, and didn't let go of the horn. He was so close! All he had to do was to muster enough power to pull it off! He held his brother, now silent, as his vocal cords were too tired to scream anymore, and tried to muster enough energy to save him.
And as if a higher power had indeed given him that strength, the horn finally snapped off Shô's head. Just as Ruy was throwing the horn to his right, it exploded into another wave of blue sparks. Last thing Ruy felt was burning sensation on his skin, and then...
Everything went quiet.