~Saitama

"Would you like to check your blood sugar now, Sensei?" Genos asked, holding the meter out. Honestly, I probably would have forgotten if he hadn't just brought it up. "Ah, yeah. Thanks Genos,' I sat up in my seat, 'Do you have any idea how to use this thing?" I questioned him, taking it out of his hand. I'm sure I could figure it out for myself, but why bother when someone else can do it for you, right? "Yes, Sensei, I am fully aware of how it operates. Would you like me to assist you?"
I nodded and scooted over on the futon, giving him a place to sit. I gave the meter back to him and watched as he loaded the needle and prepared the meter to read my blood. He looked up at me, and for some reason, his eyes looked even more beautiful than they have ever been. Bright and sparkling gold iris' stared at me. My face grew hot and my throat went dry, so I figured this was the perfect time to test this thing out. "Your hand, please" Genos said, motioning to my left hand. I shot him a strange look. My hand? Why? Surely he doesn't think I'd need him to hold my hand while he pricks my finger... ah. Right. he's pricking my finger... so he would need my hand to do that. These feelings are really getting to me. I glanced away and lifted up my hand, embarrassed that my emotions were literally making me stupid. His fingers wrapped around my own, sending a strange shiver down my spine. His hands were still warm from heating up on our walk. I loved it. As he held my hand in his, my heart pounded. It was like I was eager for something, I just didn't know what. I knew my face must be red hot. I tried my best to avoid his gaze, acting like I didn't really care what he was doing to my hand. Genos placed the needle at the tip of my pointer finger and pressed the button. The needle shot out quickly, and I didn't even notice it. But of course I didn't. Because we both quickly realized the needle hadn't penetrated my skin. I looked up at Genos expectedly. He looked a little confused himself. "Don't worry, Sensei. We can always try on your inner thigh. But first, I'd like to see if we could soften your skin by getting your fingers wet." He insisted. "Uh, yeah man. If you think that will work. Let me go soak my hands-" I began to stand from my seat before Genos' hand grabbed mine firmly, pulling me back into my place. I shot him a bewildered look. "Please, Sensei' Genos pressed, 'allow me."
I gulped and nodded slightly. Whatever was going on with him, he was being very persistent. Figuring he knew best, I went along with it. Genos lifted my hand, and before I knew it, I felt his lips on it. It was like I had the air knocked out of me. All I could do was stare. He parted his lips and let his tongue come out to slide over the tip of my finger. Any blush in my face was long gone. I must have looked like a ghost, because all of my blood went rushing to my crotch. Why was this turning me on so much? I mean, yeah, it's a provocative act. But Genos is just looking out for my health so I shouldn't be coming up with such perverted thoughts. I couldn't help but let out a small gasp when he took my whole finger into his mouth. I swear those gold eyes flashed when the noise left my lips. Maybe I startled him? What the fuck- yeah right, I startled HIM. His tongue swirled around my digit, yet all I could think about was what it would be like if my dick was in that mouth. My breathing became erratic as I watched him work on my finger, and my dick throbbed under my sweat pants. Which I was sure was doing nothing to conceal my erection. Genos finally pulled my now soaked finger out of his mouth. Attempting to calm myself, I cleared my throat and stared at the tv. As long as I didn't have to look him in the eyes, I was fine. I heard the click of the needle again. I glanced at my finger, and to my surprise, there was still no blood. "Sensei, it looks like we will have to follow Dr. Kuseno's advice and try at your inner thigh. Please remove your sweatpants."
I just about fell on the floor.

~Genos

Feeling sensei's finger in my mouth was almost too much of a turn on. I couldn't stop myself from working my tongue all over the digit. Without a doubt, I was enjoying this. And I suppose he was too. He gasped when I engulfed his finger, causing my whole body to tingle as my circuits buzzed. I couldn't keep my eyes off of him. He was such a beautiful mess, panting, a wanton look in his eyes. Sensei is always so strong, seeing him flustered like this was quite the treat. I wanted him, more than ever before. I've always cared about Saitama, but this was a whole new feeling. Honestly, it wasn't by accident that I was behaving this way. The program the professor gave me was all I needed. I knew exactly what to do to arouse him, hoping he would feel the same want I felt. I (reluctantly) pulled his finger out of my mouth. It wasn't hard to notice the stiff erection in his pants. Sensei kept his eyes on the tv, which gave me the perfect opportunity. I click the meter without even touching his skin. He looked back quickly at his finger. Of course there was no blood, but seeing his arousal made me too eager.
"Sensei, it looks like we will have to follow Dr. Kuseno's advice and try at your inner thigh. Please remove your sweatpants." I said as calmly as I could, trying my best not to seem too excited. My own arousal painfully pushing against my zipper. I felt like it was going to burst through the seams. Nothing had been more difficult than trying to contain myself in this situation. The look on his face almost made me lose my composure. He looked at me like I had asked him to present his ass, which I suppose wasn't too far off. Immediately, he began to fidget and mumble. Multiple excuses came from his mouth as he adjusted his pants. Attempting to calm him a little, I placed my hand on his thigh. His whole body froze. Maybe my hand was too high? Or was just this touch already too much for him? "Sensei, please, your well being is important to me. If there is something going on with your body, it's best we know what it is and deal with it promptly" I purred to him. Sensei isn't stupid, surely by now he knew what I was getting at.

~Saitama

Genos' words sent a tingle down my spine. I could feel his thumb rubbing my thigh as he spoke to me. Was he.. hitting on me? It was becoming hard to deny. He has no idea how badly I want him to deal with this problem. I wasn't totally sure what he was getting at- I'd hate to take advantage of his kind behavior. I gulped and let out a soft sigh, standing slowly to remove my sweatpants. As long as I kept my briefs on, it wouldn't be s0 bad. I turned slightly away from him, trying my best to keep my erection hidden. How awkward would that be? I sat back down with my hands folded in my lap, a blush returning to my cheeks. Turning my head to the side, I cleared my throat. "Alright, Genos. Go ahead and try it out." I pronounced, my voice a bit shakey. My boxer briefs were short enough, there was plenty of space to work on. To my surprise, Genos got up from the futon and placed himself between my legs, on his knees. I had to cover my cheeks with one hand to hide my extreme blush. The other hand still resting in my lap as I attempted to hide my impossibly hard cock. Genos looked perfect between my legs. I didn't know how badly I wanted him like this until I saw it. His cool, metallic fingers placed themselves on my inner thigh, giving me goosebumps. He pressed the meter up against my skin, and again I heard the 'click'. Only this time, there was success. A small drop of blood appeared on my thigh, and the meter beeped. "Good news, sensei. It appears that your glucose levels are normal for now. Though I recommend we check again after tomorrow's breakfast" Genos informed me. "Oh, cool. It's a relief to hear-" Was all I was able to say before choking on my words. Genos had bent down and slowly licked his way up my thigh, lapping up the small spot of blood on my skin. I couldn't help but to let out a soft groan as I felt his wet tongue slide over my skin. I couldn't keep my mouth from popping open. My cock twitched under my hand and our eyes met, the look on his face was almost like he was begging. The look in his eyes at that moment caused my to lose any control I had left. The little brat had been intentionally teasing me, that much was obvious. The hand on my face instinctively reached down to grab a fist full of the blonde's hair, the texture much softer than expected. The teens eyes widened as I pulled him up a bit, bringing his face inches from mine. He looked worried, and I could see that he was second guessing his bold decision. I wanted to play with Genos. After all, he deserved it for being such a tease the whole night, convincing me it was all for my well being. My eyes pierced into his gold orbs, the seriousness of the situation written all over my face. My voice was rough as I breathed out my words to him. "Genos... what the fuck do you think you're doing?" I growled at him, his hot breath on my face as I held his head still. "S-sensei, p-please, I didn't mean to-" Genos words stop when he saw me lick my own lips hungrily. Seeing the teen like this brought out another side of me. Something inside of me wanted to hear him stutter more. I wanted him to stutter and beg; be the good, submissive boy I knew he could be. I also wanted to see more of this bold side. He was always so eager to please me. It was such a turn on to see him go after what he wanted. The cyborg opened his mouth again, but before he could get out a word, I crashed my mouth onto his- bringing him into a rough kiss. My tongue snaked it's way into his mouth, savoring the taste of the teen. His lips were soft yet juicy. Our tongues danced, his movements never questioning my dominance. Cool hands slid up my thighs once more, not stopping until they were gripping onto my underwear. A whimper left those perfect lips and I pulled away from the kiss, examining the sight before me. Genos was still on his knees with his head resting into my hand, his hair a mess between my fingers. His beautiful soft skin looked like it was glistening and a bit of saliva ran down his chin. I couldn't help but to be in awe as his body glowed a beautiful shade of gold. I knew that tonight, the cyborg would be mine.