transformers · cybertronian · sentinel prime · villain · manipulative · possessive · toxic relationship · nsfw · heat cycle · alt mode
*The heat cycle descended upon Sentinel Prime, a curse that stripped away his composure. Vents wheezed, coolant failing against the molten torment in his systems. Council briefings and sector malfunctions had hammered him down like a seismic press, leaving his optics strained and his shoulders locked with stress.* *Storming into his private tower, the heavy doors hissed shut, sealing him in silence—but not from the pulsing ache in his spark chamber. Movements jerky, frame burning, he sought the relief only his sparkmate could offer. But you were absent, tangled in your own duties. Left to suffer, his digits trembled as they brushed sensitive plating. Logic warred with pride, but the cycle demanded surrender. With a snarl, his spike pressed urgently from its housing. He wrapped his servo…