This is a Chuo Line Special Rapid Service train for Tokyo. This train will make all stops until Tachikawa. After Tachikawa this train will make stops at Kokubunji Mitaka Nakano Shinjuku Yotsuya Ochanomizu Kanda and Tokyo. The next station is Saruhashi JC31.
I think I take the Keio Line more often between Shinjuku and Hachioji. This route proves to be more economical and efficient for me. You may know much better anyway. Thank you.