Honshi Kaikyō Bus Company
Proper noun referring to a specific bus company operating in the Honshū-Shikoku region.
The Honshi Kaikyō Bus Company operates express buses connecting Honshū and Shikoku.
Compound of 本四 (Honshi, abbreviation for Honshū-Shikoku) and 海峡 (kaikyō, strait) plus バス (bus).