Shibayama Railway was founded on May 5 , 1981 .
Shibayama Railway was received an operating permit on June 24 , 1988 to use dedicated small train sets between the current Shibayama - Chiyoda Station site and a temporary station adjacent to Higashi - Narita Station .
Shibayama Railway was founded on May 5 , 1981 , and received an operating permit on June 24 , 1988 to use dedicated small train sets between the current Shibayama - Chiyoda Station site and a temporary station adjacent to Higashi - Narita Station .