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He leaned in and tentatively brushed their lips together, pressing more firmly when Genos hummed softly into the kiss. his eyes fell shut and somehow his hands found their way into soft golden hair. Saitama groaned when he felt warm metal fingers trailing up his spine. He broke off to gasp in a breath and peeked up into amber eyes.
"Genos, is this—" Saitama cleared his throat. "Is this okay?"
Genos curled his fingers more tightly into the back of the man before him. "Yes Sensei. Yes, this is definitely okay." He breathed against Saitama's mouth, still a little dazed from the unexpected kiss.
Saitama took a step back and stared up at Genos. "If we're gonna do this, you can't call me sensei, its..." His ears went a little red before finally saying, "weird."
"Of course! if that is what you wish Sen—" his voice cut out before finding itself again, "pai! " he looked unaccoutably pleased with himself even after Saitama smacked himself in the face.