I took Professor Hirano for a seminar class in which we all pursued our own research topic and were pretty much independently working. Because of this individualized style of a course, I didn't really get a chance to see him lecture. However, Hirano was incredibly helpful and informative in our projects and would always provide useful guidance for how we could better tailor our research to fit our interests. Meeting with him individually, he would recommend historical works, important figures, and more to assist in our search for information. And we would also present our projects and ask questions about others' projects as a group, which facilitated interaction and learning between students, despite the course being more self-guided.
My only disappointment with the course was that we didn't get feedback on our final papers, and just got grades. I'd have liked to receive suggestions/comments/critiques on my work to know where there's room for improvement. But otherwise, it was a great course.