自己流 : Jiko-ryū, being self-taught.
“Autodidacticism (also autodidactism) or self-education (also self-learning and self-teaching) is the education without the guidance of masters (such as teachers and professors) or institutions (such as schools). Generally, an autodidact is an individual who chooses the subject they will study, their studying material and the studying rhythm and time. An autodidact may or may not have formal education, and their study may be either a complement or an alternative to it.”
Even though teachers are still necessary and indispensable to the learning process of students primarily as role models and guides, students should learn to teach themselves and not just rely on the teacher to teach them for two main reasons. First, a good teacher may not always be available to teach students: good teachers are extremely rare, while bad teachers are numerous. But most importantly, no matter how good a teacher is, even the best teacher cannot ensure that the student will learn as much as the teacher or student wants.
In the end, students must eventually take responsibility for their own learning, and the best teachers teach their students to teach themselves. The teacher therefore provides the necessary model whereby the students can learn vicariously through the teacher’s example. This is how autodidacts learn to become the geniuses they became.