One Punch Man Boyfriend Scenarios *In Editing*

When He Hears You Sing

Saitama
You and Saitama decided to go shopping since Genos was out and was going to join the two of you later, you waited at the top of the second floor stairs, you gave a sigh as you walked up them but then gave a smile after hearing your echoes.
"Are you insane like me? Been in pain like me? Bought a hundred dollar bottle of champagne like me? Just to pour that mother fucker down the drain like me? Would use you water bill to dry the stain like me?" Are you high enou-."
You glanced up and stopped walking after seeing Saitama there. "Hey." You gave him a smile as he gave you a couple of blinks and put on his gloves. "That was you?" "Yeah?" He walked down the stairs and past you as you followed behind him. "I know you're insane. But waisting money like that isn't good. Maybe that's why you're at my apartment." You gave narrowed eyes and stopped, he turned around and stared at you then started to walk again. "Nice voice by the way." You smiled with a eye roll and blushing cheeks and continued to follow behind him.
Genos
You were at work today helping Dr. Kuseno fix up some parts, he gave you a small nod before working at the other side of the room, you were trying to find small bolts for him as you hummed before the lyrics slipped out.
"With our backs to the wall, the darkness will fall. We never quite thought we could loose it all. Ready aim fire, ready aim fire. An empire's falling just one day. You close your eyes and the glory fades. Ready aim fire, ready aim fire away. Ready aim fire."
"(Y/n)." You slightly jumped after hearing Genos, you gave a small smile and turned to see him staring at you. "Oh hey. I'm almost done then we ca-." "You were singing correct?" Your cheeks gave a light pink tint as you gave a nod, then the two of you looked at Dr. Kuseno after hearing chuckle. "Lovely voice she has, huh Genos? That's all she does when she's working." "Yes. I agree." You smiled with an eye roll, he then took your hand and pulled you towards the door. "We must show Master Saitama." You gave a sigh once you left the room with an eye roll but with a smile and blush.
Mumen Rider
You were your apartment making yourself something small to snack on before going to the market with Mumen when he gets back from being a patrolman. You started to hum and give a little head nod before the lyrics slipped through your lips.
"Build a rocket ship and then we'd fly it far away. Used to dream about outer space but now they're laughing at our face saying 'wake up you need to make money.' Yeah, wish we could turn back ti-."
You stopped once you heard the door click open, in a gasp you turned to see Mumen coming into the room with a smile. "You ready?" "Hang on." You showed him your snack and he gave a small laugh and a nod, after you cleaned up you sat on the couch next to him and ate. "That was beautiful by the way." "Hm?" "Your singing. I'm pretty sure everyone down the hall heard it." You blushed with a shocked face expression, then just smiled once Mumen pecked your hand.
Zombieman
You groaned once you gotten out of bed, you woke up about ten minutes ago but it took you a while to get out of Z.M's grip. You followed the trail of muddy footsteps that led from your bedroom to the front door, after grabbing a rag you scrubbed your carpet and hummed while doing so.
"It's getting harder to stay awake, and my strength is fading fast. You breathe into me at last. I'm awake, I'm alive, now I know what I believe inside. Now it's my time. I'm awake and I'm alive."
You stopped singing once you sat up with a sigh, then stood up, only to turn to see Zombieman in the doorway staring at you. "I'm awake. But." You blushed and gave a small giggle, he smirked then walked over to you, you blushed more once he pulled you into his bare chest, pecking your forehead. "Lovely voice." He then walked over to the door way, you blushed but narrowed your eyes. "Lovely mess too."
Metal Bat
You were on your way back home from work, you gave a small groan seeing how your phone was about to die and you couldn't text Metal Bat. It was late and the street lamps gave you light, as you looked around you began to hum before the lyrics slipped out.
"I find the answers aren't so clear, wish I could find a way to disappear. All the thoughts they make no sense, I found bliss and ignorance. Nothing seems to go away. Over and over again. Just like before."
"Haven't heard that song in a while." You gave a small gasp and turned around, when you did, a Metal Bat stopped walking and gave you a smirk and an eyebrow raise with his bat over his shoulder. "Have you been following me?" "No, well. Just when you started singing. I texted you but." You smiled and held up your phone, he then gave a nod and a chuckle, walking over to you and putting a hand around your waist. "Do you wanna finish the song?" "Really?" "Yeah."
Blue Fire
You placed a head phone in one ear as you did the dishes, you heard your apartment neighbors shouting so you placed in the other earbud with an eye roll, you then started to nod your head and sing softly.
"Pull me off to darkened corners, where all other eyes avoid us. Tell me how I memorize you. I love you and despise you. Back to the crowd where you ignore me, bedroom eyes to those before me. How am I supposed to handle, lit the fuse and missed the can-."
Your eyes met Blue Fire's after he pulled out your ear bud, you took out the other one with a smile and a small hint of blush. "Hm?" "You're singing out loud." He walked over to your kitchen and took a glass cup, filling it up with water and bringing to you before going to the couch. "I wouldn't mind if you continue. Not saying I'm fond of listening to people sing but." You took a sip, waiting for him to finish his sentence but instead, he stared at the ground, you blushed and gave a head shake. "You're sweet." "What?" "Nothing."
Stinger
You were at your house, you were making yourself a microwaved meal, you were expecting Stinger but not till tonight, your phone was on charge next to you. It was quiet so you put on pandora. You gave a small dance to the song and locked your finger after burning it, then started to sing the lyrics.
"He's left her a message to make sure she's okay, she doesn't care for her own life anyway. Anyhow lately she's been so depressed, keeping all of her feelings represssed. He loves her and she loves him but she's far to scared to let anyone in. I've thrown out my life, I'll give it awa-."
You gave a small gasp after feeling arms around you, you blushed and glanced to see Stinger, his face in your (h/c) hair. "Stinger?" "That was sad." You then gave a small chuckle and paused the song, you turned to see him giving you sad eyes before you kissed his cheek. "It's just a song." He then chuckled and took your hands. "Sad song, lovely voice." You blushed once he kissed your cheek and took your phone. "Let's find a happy song." "Stinger." "Ooh, here's one. Now you may sing."
Sweet Mask
You sat at the computer at your house in your own little office room, you were making a magazine article of Sweet Mask to add into the newspaper. You started to hum to the beats of the song that was next on your playlist, then you started to lip sink the lyrics.
"Kids forever, kids forever, baby soft skin turns into leather. Don't be dramatic, it's only plastic, no one will love you if your unattractive. Oh Mrs. Potato head tell me, it's it true that pain is beauty."
"Well." You turned your head and the chair to see Sweet Mask leaning against the door way, he smirked then pushed his back and came over to you. "Lovely voice I must say. Have you thought about singing instead of this?" You have narrowed eyes when you looked back the computer, but yet gave blushing cheeks. "No, and if it wasn't for this I wouldn't be with you." He gave a chuckle then lifted up your chine and stared into your eyes with a smirk. "I'm sure I would have ended up with you anyways." He pecked your lips then left the room, you blushed and ended up smiling.
Sonic
You were in the living room cleaning up where you ate, you then went into the kitchen to put away dishes, seconds later your song started to play a song, you smirked then started to go with the lyrics.
"I have the right to remain violent. Anything you say will be used to silent. So shut the fuck up with your blah, blah, blah. Rip your face raw like Texas chainsaw. Born into a world that was turned against me."
"Geez. I thought I was bad." You gave a small gasp and turned to see Sonic raising an eyebrow at you with his arms crossed and a smirk as he leaned against the doorway. You gave an eye roll and a smirk, you look down just to see him laying on the couch. "What are you doing here anyways?" "Listening to you sing." "Sonic." "Hm?" "Seriously." "I am too." "Sonic!"
Flashy Flash
You stared at the computer screen, clicking on different locations in the search for a seaweed like monster that was in the city. As you did so you started to hum the song that has been playing in your head for the past days.
"Mayday, mayday. The ship is slowing sinking. They think I'm crazy but they don't know the feeling. They're all around me, circling like vultures, they want to break me, and wash away my colors."
"Well if there's a ship sinking you should send someone." You smiled and glanced to the side to see Flash sit in a chair next to you, you looked back at the screen as he gave you a calm smile. "That was lovely." You blushed more and gave a small head shake only to see Tornado laying down as she hovered. "Yep! Sadly she only sings alone." "Were you there the whole time?" "He was too." Flash gave you a calm smile still, you just sighed and looked back at the computer screen.
Garou
You were at work, stocking shelfs, the store was empty for it being close and you were just doing last minute things your father asked you to do. You skipped the song that you were listening to and smirked to the new one.
"I tried to leave the house but she won't let me out. Deadbolt lock got me strapped to the couch. She's gotta dirtier mind than my mouth."
"I believe that." You turned around to see Garou messing with a bracelet before putting it back into the box, then looked up at you seeing you blush with a smirk, he smirked back the sat on the counter and paused the music. "Not inappropriate for the store." He chuckled as you took your phone back, he then raised an eyebrow and smirked at you. "Didn't know you sing? Pretty hot." "Shut up. And go. I'll met you outside." "Uh huh." He gave a smirk and kissed your cheek, you blushed and shook your head, playing the song again.

(Hello there Sorry for slow updates but hoped you enjoyed this more to come soon! List of songs below, in order XD)
Hasley-Gasoline
Imagine Dragons-Ready Aim Fire
Twenty one pilots-Stresses Out
Skillet-Awake and Alive
Linkin Park-One Step Closer
Simon Curtis-Super Psycho Love
Altessa-Sara
Melanie Martinez-Mrs. Potato Head
Blood on the Dance Floor-Unchained
Starset-Demons
Nightcore (version)-Dirty Mind