On May 5, 2007, Fujin Raijin II, the park's TOGO stand-up coaster, derailed, killing Yoshino Kogawara, a 19-year-old university student from Higashiomi, Shiga and injuring an additional nineteen guests.

[2] An investigation revealed that the ride derailed due to a broken axle, of which none had been replaced for fifteen years.

[3] Following this accident, similar coasters at other Japanese parks were voluntarily shut down and inspected to see if they could also have the same axle flaw.

[4] Expoland was cited by authorities for faulty maintenance when similar axle cracks were found on a second train a month later.

[5] The park reopened after the accident but closed again on December 9, 2007, citing a lack of attendance.