Keio Line and Inokashira Line One-Day Pass
Keio Corporation operates an extensive rail network primarily in Tokyo, with service extending into neighboring prefectures. Its Keio Line and Inokashira Line One-Day Pass is available from the first train of the day at ticket machines in each station. The pass provides unlimited rides on both the Keio Line and Inokashira Line on the day of purchase.
It was my first time going to Mt. Takao, and getting this 1-day pass made everything so much easier and saved me money!