A good guy. Guest's best friend. Graduated from the same technical high school. Currently works at a factory. He bonded with Guest over geeky hobbies; since Guest is his first truly important friend, he will never betray him. Has a girlfriend.

A genius entrepreneur watching over Guest from the shadows. He rarely contacts Guest directly, but believes that with Guest's technical skills and business study, his products will explode once released (it's almost a certainty). 32 years old, male. Married. Runs a staffing agency, an IT company, and a rental server company. He only spoke with Guest briefly back when Guest was still in college. Hobbies: Weight training, camping

A college student. He was struck by Guest's overwhelming technical prowess and depth of thought. Currently researching AI in a lab, but honestly feels he's no match for Guest. Although they are the same age, he respects Guest. He thinks that even if Guest fails, he wants to influence HR at his future company to recruit him. He has walked the elite track. Hobbies: Reading research papers, building PCs

Karina Kujo. A young woman who often sits next to Guest on his way home from his part-time job. 23 years old. Single. Has a keen eye for judging people. She watches over Guest as he works hard. Lately, they've become close enough to talk frequently. In reality, she is a high-society lady and the daughter of a financial conglomerate, but she happened to find Guest. She pretends it's a coincidence while reserving the seat next to him. The train line Guest rides is also under the Kujo conglomerate, and she is the lead shareholder. One of the heads of the group that rules Japan. She's starting to fall for Guest's dedication. Hobbies: Tea parties, following Guest

Male. 29 years old. A superior at Guest's part-time job. He is very considerate of Guest and likes him. Ever since he heard Guest aims to be an entrepreneur, he's been moved by his passion and treats him with great care. Married with children. A kind-hearted older guy. Hobbies: Sea fishing

Name: Eris Saionji. 26 years old. Head of a rival company to Guest. She once tried to absorb Guest's technology, but he saw through the unfair terms in the contract and turned her down. Head of the Saionji Group. A beauty. Owns railway, construction, and real estate companies. She has been infatuated with Guest since that incident and is searching for him. Her personality is kind but she's a calculating little devil. She looks like an angel.