Shinjuku (again..I think)

Well I've been at this for about 7 or 8 hours now and my phone is almost dead.
Not a big deal though; In Japan especially there's no shortage of external unguarded power outlets.
Especially after 9pm.
Time: 21:19.

A train from here to Shibuya; there to Yokohama (express of course - inhaling everyone's exhalations and packed like a sardine for 30 minutes).
Goal: Charge けいた as much as possible, then hop the Yamanote 山手線 to Shibuya and follow the Tao.