"What's this?" the young man sniffing at the small cup of rice wine.
"Sake dear boy. Drink it, I promise you'll enjoy it~" the man's voice still jovial with a hint of promise in it.
Shrugging, Will slams the drink back, regretting it a moment later as just a hint of complex and delicious flavors hits his tongue. "Ah, could I please have more?" a slight hiccup leaving his lips as the man nods and pours Will another drink. This time, the sake is savored, consumed over the course of a few moments. "That's really good! How much a bottle?!" surprised, a bit excited.
"Well, why don't you wait a few minutes before I tell you." the man laughing, as if he knows something that Will doesn't. "Another glass?"
"Please!" the aftertaste in the young man's mouth lingering nicely as his teeth begin to sharpen, almost prominent fangs growing in with a slight feeling of pressure. Not that Will notices, too busy slamming back another cup of the liquor. The third cup gone, the young man's eyes are already changing, from a dull brown to a frighteningly intense yellow, almost glowing as his irises grow, giving him an almost supernatural cast. Of course, that almost is readily apparent a few moments later with his longer and pointed tongue and a single bump beginning to form at the center of his forehead.
"Mmm, you seem to like it. The whole bottle's yours free if you can finish it and remain standing." the man, laughing more, watching Will as if he's destination television.
Now, Will was normally a reasonably grounded young man. Not prone to taunts or boasting. But somehow this challenge got his blood boiling. He'd show this shopkeeper and drink the whole bottle. "Bring it!" a smirk on his face, showing off his now sizable fangs as he began to chug the entire thing. Not that he noticed the fangs. Or the growing horn on his forehead, a strong thing, black and rising up like a unicorn's but much less elegant. And he certainly didn't notice how his nose was growing smaller, cheekbones rising, and face becoming both stronger and much more feminine, a paragon of feminine beauty without sacrificing toughness. Only his hair attracted some attention with an errant hand moving it aside, it's lengthening tresses paling to an almost white hue, growing longer and silkier, obviously well taken care of despite its somewhat unruly appearance.
As the shopkeeper watched, leering almost, Will's pants began to rip, widening hips tearing them. It didn't help that he was growing taller as well, rising well past 6 feet and nearing 7 as his shirt ripped, unable to contain a growing pair of breasts and a much more muscular waist. Arms toning, hands adjusting their grip on the bottle, black claws growing out and hands expanding. A surge of power in his...well, her, legs ripping her pants for good, leaving them, like her shirt, little more than ruins and scraps of cloth on the floor, shoes having burst revealing larger toes and feet tipped with similar black claws. Her boxers, elasticated as they were, putting up a valiant fight, looking almost like a thong and revealing a camel-toe, visible now that she didn't have pants on. As a final touch, the new oni's skin turned a deep as she finished the bottle, slamming it down onto the counter with a smirk. "Ha! Won that!" And then she noticed her voice, and her hands....