Where does Byakuko take Makoto?

A lab

Letting his (boss?) guide him, Makoto was shown to an almost stereotypical lab setting. There was standard fare you'd find in a high school experiment class, mixed in with industrial machines that left no mistakes as to the lab's deep pockets. Without pause, the woman enters the lab and deliberately picks up a flask of strange colored liquid. "You. Is this ready?" Stopping one of the scientists roaming the lab, she only needs a brief pause before giving the heiress an answer.

"Yes, ma'am. We've finished the new formulas as discussed."

"Splendid." Turning to Makoto, the heiress makes a decision. "Makoto, you'll be here for the rest of the day. Start by drinking this." Taking the container, Makoto can't help but be unnerved by the color he can't quite define.

"This isn't like, poison, is it?"

"I should hope not; this is our beverage facility. We're trying to invent the next big soft drink." With his fears seen to, Makoto drinks the strange liquid. It's sweet, familiar even...

"It tastes just like Coke." Raising an eyebrow, the heiress takes the tube of liquid and sips it herself, seemingly uncaring of the indirect kiss she just took from Makoto.

"You're right." Stopping that same scientist, Byakuko thrusts the flask into her hand. "Taste that." As the scientist drinks, the owner continues. "Is that or is that not an exact replica of Coca-Cola? Destroy it before we get sued, and send whoever made that to my office." Turning back to her helper, Byakuko laid out exactly what he'd be doing. "Anyway, your job is to taste test the new batch of formulas and inform them on how to improve the flavor. Come straight to me if you find another copycat." With that, the heiress leaves Makoto to his job.