Waiting/sleeping at station??

Dears,
I want to take the last train from [Shin-Imamiya station] to [Fuji station-Shizuoka] which will arrive at 10:59.
The train will stop at [Maihara station] at 01:06, and wait for the next train in the morning 06:07.

At that time, can I wait/stay at the platform?? So I can take the morning train.
Or I have to leave the station and coming back in the morning??

P.S. I will use the JR pass.
Thanks