708877774 640x360

90 seconds to learn about eyestrain and short-sighted

Eye-straining works, such as PC work, cause eye diseases. Learn how to treat your eyes in 90 seconds.
Japanese Learning Course for JLPT N4 Level
065 Learn how to generate profit in 90 seconds
143 90 seconds to understand what an elevator pitch is
Oshiro en Learn about a Japanese Castle (Shiro) in 90 seconds
161 90 seconds to learn How to read a Japanese Calendar!