On 20th July 2018, 25 students and one professor of Leiden University have visited the Department of Chemistry of the Graduate School of Science to explore Japanese science and culture in Osaka. Their visit was hosted by Professor Koichi Fukase who gave an introductory lecture to the visiting students, followed by the OU students’ presentation about their current research. Together with our students in the Chemistry Department, they took a tour to look at the Analytical Instrument Laboratories and enjoyed lunch at the cafeteria in Toyonaka Campus. Prof. Agur Sevink of LeidenUniversity has discussed future collaboration on our research and student-exchange programs with Profs. Koichi Fukase, Takashi Kubo and Yonsoo Tak of Osaka University. We give thanks to our students who guided the visiting students.