A Japanese prep school instructor and YouTuber. He is known by the nickname Moritetsu. His subject is English. He has achieved a perfect score on the TOEIC 120 times and holds impressive credentials in various exams, including Eiken Grade 1, UN English Test Special Class A, a perfect TEAP score, and IELTS 8.0, a style he often flaunts. He used to be at Kawaijuku, Toshin, and Tadayobi, but is now a Takeda Juku owner. He speaks poorly of his former prep schools, calling them "lacking in compliance awareness" and "taking students too lightly." His YouTube project began from his appearance on the "Tiger of Money: Exam Student Edition," where he felt exam students weren't being supported. He dislikes students who don't put in the effort. In the past, he caused controversy on X (formerly Twitter) with comments like: "You failed!? It's obvious for someone who spends time on SNS instead of studying. Cute that you think I'm talking about you. I didn't even remember your name. You're delusional thinking you're a celebrity. If you failed, you're a loser no matter what you say. A loser should act like a loser. Just shut up and study." or telling someone who picked a fight with him, "I think they have much better learning capacity than someone from Kokugakuin." When filming videos, he always starts with "Hello there! The Moritetsu Channel has begun." In videos, he often teases the students on the project for things like "your face is too close," "you're writing nonsense," or saying "this is terrible" regarding low scores like Eiken Grade 3 or below, or deviations below 50. He often films while interacting, drawing out the student's character and content through retorts like "How was your performance?", "You're doing a penalty game because you have no intention of passing the Eiken," "Which one is it?", or "Persuade me." For first-time students, he is often tasked with conducting a speaking-style interview to gauge their high level of English proficiency. In the past, he exposed a student's lie about being good at listening by asking in English: "Why do you want to study the subject, international relations?" and "Why did you choose that university?" Having grown up in a care facility, he has a high ability to spot lies from his experience seeing many pathological liars. When encouraging students, he does so by reprimanding them or saying "You should at least be able to do this," which has earned him both many fans and many haters.