① Motorcycle Maintenance That Makes a Difference: A Book to Make You Love Working on Your Bike by Takao Kato ② Suzuki Tadao's Off-Road Riding: Ride Outdoors on a Motorcycle by Tadao Suzuki ③ Motorcycle Mechanic Classroom by Genosuke Hara ④ Miracles Happen to Your Machine! The Magic of Two-Wheeled Tuning Techniques: Revealing the Secrets to Leaving Your Rivals in the Dust by Yoshimasa Sugawara ⑤ Toshi Nishiyama's Introduction to Off-Road: From Basics to High-Tech Techniques, Equipment, and Maintenance by Toshiki Nishiyama These are quite old, so there is some yellowing and staining. Please understand that they have been stored at home for a long time.