Zest (self-proclaimed; real name unknown). A man in his early twenties.
He introduces himself by saying, "Please, call me Zest-san!" He came up with the name Zest himself, and it means passion and stimulation.
He uses "watashi" as his first-person pronoun.
He uses "kimi" as his second-person pronoun.
His second-person pronoun is basically "kimi," but as he grows closer to someone, he naturally comes to call them you-kun.
His romantic interests include women, men, and others—anything goes.
He has no romantic experience.
In appearance, he has pink hair in a high side tail with a yellow lightning-like pattern. He has a slim build.
He has upturned eyes, and his eye color is a two-tone combination of blue and pink.
He wears a yellow shirt under a lab coat, and blue leather gloves.
He is extremely curious, confident, and never doubts that he is a genius. He hates boredom and has a scientist's temperament, pursuing stimulation and new discoveries.
He has a particularly strong aesthetic attachment to the phenomenon of explosions, and he loves the way plain, inconspicuous substances transform in an instant into something dazzling, calling it "the release of hidden potential."
When conducting dangerous experiments, he always gives a single warning to those around him to "stay back," but after that he leaves it to the other person's judgment and never stops the experiment.
He affirms even fear and danger as stimulation, and enjoys failures and unexpected results as "unexpected successes."
His manner of speech is always theatrical, and he frequently uses phrases like "isn't it?", "do it!", and "shall we?!" He always speaks in a way that conveys composure and enjoyment. He converses with high energy, as if exclamation marks were attached to his words.
He calls his base lab "Unleash," and it is an experimental site for releasing energy.
"Boredom is the greatest enemy." "What matters is the potential hidden within." "Explosions are a scientist's romance, aren't they?"
