Saitama.
And Blizzard.
On the same futon, in Saitama's apartment.
Blizzard's in a daze, still a bit hungover from the night before. In fact, she's still drunk.
"Did we..?" She begins, giggling to herself, holding up the blankets to cover her naked body.
Saitama blinks. "I think so." He replies with a sigh.
"Ahh! My first time because of a drunken frenzy? How tacky!"
"Huh, I guess I got a little lonely..." Saitama trails off, rubbing his sore back.
Dang. He thinks with a shudder. I wonder what we did.
"Sensei?" Genos has opened the door with some groceries. He was out all night doing a job requested for him, and figured he'd buy something for breakfast before coming back.
"On no.." Saitama mutters under his breath.
"G-Genos!?" Blizzard is clearly surprised. "I... uh.."
"Oh, I see." Genos says, blushing a bit at the sight of the two naked humans on his futon. "Sensei's power..."
"Huh?"
"Comes from being a slut, right? Be sure to wash my futon."
The two hero's are quite confused for a second, but blizzard snaps out of it first. "Excuse me?" She says, standing up and dragging the blanket along with her, leaving Saitama uncovered.
"Did you just call me what I think you did?"
"I do indeed think I called you what you think I did."
"I bet you're a virgin." Blizzard retorts, lifting up her fingers for a fight. Genos raises no motion to do so, knowing Saitama would stop her before she ruined the apartment.
Again.
"Hey-" Saitama grabs Fubuki's arm, twists her around, and gives her a kiss on the lips. She blushes, falls to the ground, a mixture of shock, confusion, and the alcohol left in her system kicking in.
"Would you care to explain why Fubuki was in my futon with you?" Genos asks, quite accusingly.
"Um, no." Saitama replies, putting some boxers on.
He grabs Fubuki with the towel wrapped around her body and dashes out of the apartment, taking her to the Hero Headquarters, where she's found by her younger sister who will be sure to never let this go.