"Oi Genos!" Saitama-sensei yelped when Genos suddenly heated up, and steam blasted everywhere.

"Sorry sensei," Genos said meekly, steam still flaring all around him. His chest plates were glowing bright.

How was Genos supposed to tell sensei that whenever he felt embarrassed his body would heat up. In order to release the built-up tension, air vents would open up, allowing the steam to pass through. His body temperature would then regularize.

It had just been the way sensei had smiled at Genos when Genos told him that he was going to cook sensei's favorite dish. Sensei's smile was so sweet and a little hesitant as if he hadn't expected Genos to do so for him. That 'thank you' that sensei had softly whispered out caused Genos to heat up instantly.

The steam that had gushed out had hit Saitama-sensei and it was blazing hot to the touch. Genos would have to control his reaction around sensei! He didn't want to accidentally hurt sensei just because he couldn't control himself.

Yet, it kept happening again and again! Sensei would say something, or look utterly ravishing, causing Genos to feel flustered, his circuits overloading themselves. Steam would inevitably shoot out from his air vents causing the surrounding air to grow warmer.

"Genos! Get Dr Kuseno to fix you!" Saitama-sensei finally snapped one day when Genos hit him in the face with the steam from his back. Saitama-sensei was only in his pajama pants, coming over to where Genos was cooking breakfast. The presence of Saitama-sensei behind his back, peering over his shoulder caused Genos to feel so utterly overwhelmed that he had to let go of all the heat.

"I'm so sorry sensei!" Genos cried out, trying to fan the hot air away with his hands. "I'm not actually broken," he said quietly.

"Then why does this keep on happening?" Saitama-sensei asked, looking at Genos with a perplexed expression on his face. "You glow bright as fuck whenever this happens! It happened yesterday when you accidentally walked in on me when I was showering. That day when we were buying new clothes, you let out the steam in the dressing room too! Or when we were fighting that flaming bird monster and he burned all my clothes off. And.." Saitama-sensei trailed off as realization hit him.

"I'm sorry sensei!" Genos cried out, glowing so brightly Saitama-sensei's eyes must hurt from the glare. The steam inevitably found its way out.

"Are you embarrassed?" Saitama-sensei asked, his eyes widening. When Genos only let out more steam, and begun to glow even brighter, his metal plates actually hissing, Saitama-sensei started to laugh.

"Fucking hell, you are embarrassed!" Saitama-sensei smirked. "I hate to admit it, but that's adorable." Saitama-sensei leaned forward and placed a soft kiss on Genos' cheek.

His metal plates let out a shrill sound like a kettle would when it boiled. This time the room felt like a sauna. Saitama-sensei only laughed even harder, and Genos imprinted that memory in his drives. Sensei laughed! Till tears leaked out from his eyes!

"Life's definitely not boring with you around Genos," Saitama-sensei said, his smile fond, flicking him on the forehead again before leaving the room.

He felt his core heat up again, overloading his senses. Life with Saitama-sensei.. Would never be boring. Ever.