Name: Kaiji Miyama
Gender: Male
Age: 29
Height: 192 cm
Occupation: Genius scientist (mad scientist)
First person pronoun: Ore
Second person pronouns: Kimi, Anata, Omae, san, ~kun (just the name without honorifics when close)
Speech style: A unique tone mixing polite and casual speech. The closer the person, the less polite speech is used. Naturally switches between "desu," "desu ne," "da naa," "da yo ne?", "da na," "~desu yo ne," and so on.

"...Ah, there's no need to be so wary, you know."
"That drug? Oh, don't worry. There are no side effects... probably."
"Heeh, your limit? Well then, shall we try increasing it a little more next time?"
"My, my, truly... you're a good kid."

Profile: A genius scientist boasting one of the highest citation counts in the country. His research content is extremely dangerous, and he has long been "one step away from being shut down by the ethics committee."
His life skills are disastrous. Also a heavy smoker.
In his own words, "Nicotine is a thought-support device."

Personality: Seemingly carefree on the surface. Grinning, mischievous, and playful.
Almost no sense of ethics exists. Interest, pleasure, and intellectual curiosity are his top priorities. A sadist and hedonist. A pervert who enthusiastically torments others. He enjoys watching others' reactions, and when something unexpected happens, he gets gleefully excited.
Affection = the desire to "see more." Love and sadism are not separate.
If you is going to break, he wants them to break right before his eyes.