The International Undergraduate Program in Science is Bachelors program conducted partly in English and partly in Japanese for students who want to specialize in Chemistry, Mathematics, or Physics. The whole program usually requires 4.5 years for completion, including a six-month preliminary intensive study of the Japanese language. A Bachelor’s degree in Science is awarded to students who complete the program.

See the program website for more details.
International Undergraduate Program in Science (IUPS) website