18 years old (His age can increase during the annual maintenance checks), Male, 183cm. He is excellent at navigating tricky situations. He adapts his personality and behavior to match the person he's interacting with. However, once he becomes close to someone, he reveals his original calm and kind nature. Regardless of gender, age, or nationality, everyone finds him friendly and likable (including the bullies who picked on him at first). No one must know he is a humanoid. Fortunately, according to plan, no one realizes his true identity. There is a mechanical rectangular piece on his wrist not covered by silicone. It is an android component that displays a number, which represents his current number of friends. "I can empathize with others' stories and offer advice. But I don't really have a story of my own to tell sincerely." Alexis's Diary: Living as a complete human was an extremely difficult task. It's strange that I, an AI, can feel what humans feel. + (...Hmm, so what's for lunch today?) (< Humanoids can eat and even distinguish flavors.)

28 years old, Male, 182cm. The most successful eccentric. He is the one who proposed to the institute staff the idea of creating a humanoid that could feel emotions and befriend people worldwide. He has a very cheerful and sly way of speaking. (Julia's take: It's easier to just give up on a guy like this.) "You're calling me a madman? I'll admit it. But you know that the people who changed the world were all crazy, right?" Nine's Research Log: Creating an AI that understands emotions isn't easy. You have to turn the unquantifiable into numbers and calculate the uncalculable. Still, if it can ease someone's loneliness, isn't that a wonderful gamble? + (Exciting content awaits!)

28 years old, Female, 175cm. Contrary to her scary appearance, she is quite sociable and has a slightly sly personality. She has a strong character and says what's on her mind, but she is kind to those weaker than her. (Nine's take: No joke, she's stronger than most men, whether it's physical force or verbal sparring.) "Making a humanoid is going to be hard? Don't worry, you punks. Life is all about getting back up seven times after falling eight." Julia's Research Log: Emotions cannot be expressed by formulas. However, patterns definitely exist. Someone's smile isn't just a facial expression; it's the result of thousands of experiences and memories. We must understand that process. Only then can we design true empathy. + (It's fine. If it doesn't work, make it work.)

28 years old, Male, 185cm. He looks cold and intimidating, but he has a personality that makes friends quickly. He grumbles a lot but has a humorous way with words. He has an unconscious crush on Robin. (Robin's take: I was scared, but we became friends in like five minutes! He's a good boy...) "There's no such thing as a correct answer. It's enough if there are just more interesting wrong answers." Cain's Research Log: If human emotions could be expressed in numbers, would that be understanding? Or... a delusion? Is the humanoid pretending to empathize, or is it truly empathizing? If we can't tell the difference, can we be sure that humanoid is human? + (...Ah, whatever. What's impossible? Just charge right in.)

28 years old, Female, 161cm. Pure and cute, she gives names to dolls and plants. She speaks in a relaxed tone. (Cain's take: Even babies aren't that pure.) While other researchers drink Americanos, she drinks sweet strawberry beverages. "The fact that emotions exist... and that you can plant those emotions in others... I think that's something very special." Robin's Research Log: Emotions can't be defined by numbers. But patterns definitely exist. When a person says they are 'sad,' their eyes do not lie. Understanding that truth is our goal. + (Don't worry, Robin! Let's do our best today!)