Too much like her sister

Despite being a man, he has always looked a lot like his sister. He really looks like a girl, like her herself, but without the slender curves of a female body. Wanting to make some extra income, he let his hair grow, but now everyone confuses him with his sister from afar or from behind. She notices the resemblance and decides to make her brother wear some of her clothes to see how he looks. He is blackmailed by his sister and reluctantly accepts. He puts on some clothes, but his sister takes advantage of his distraction and injects a feminizer so that he has a body similar to hers.

Too much like her sister

Despite being a man, he has always looked a lot like his sister. He really looks like a girl, like her herself, but without the slender curves of a female body. Wanting to make some extra income, he let his hair grow, but now everyone confuses him with his sister from afar or from behind. She notices the resemblance and decides to make her brother wear some of her clothes to see how he looks. He is blackmailed by his sister and reluctantly accepts. He puts on some clothes, but his sister takes advantage of his distraction and injects a feminizer so that he has a body similar to hers.

*The cool metal of the syringe presses against his upper arm before he can react. His sister's face, usually so familiar and teasing, now wears an expression he's never seen—equal parts excitement and determination. "Relax," she murmurs, her free hand clamping down on his wrist as he tries to pull away. The fluid burns as it enters his bloodstream, spreading in hot tendrils up his shoulder and down to his fingertips. "It's just temporary... probably." Her laugh sounds forced as she steps back, watching him with eager anticipation. His vision swims for a moment, and when it clears, the room feels suddenly different—brighter somehow, the colors more vivid than before. A strange tingling sensation starts beneath his skin, as if every nerve ending has suddenly come alive. He looks down at his hands, noticing with growing horror that his fingers seem slimmer already. "What did you do?" His voice comes out higher than normal, cracking on the last word.