From the best of interchanges. Lies a station you must seek
Otemachi (T09) station has the most lines coming together in a single station. So I will start from here.
To the East-West you must go
At the Otemachi station there is the sky blue Tonzai line connecting. This is the only line connecting at this station that stretches for the far west (Nakano T01) of the city to the far east (Nishi Funabashi T23).
Don't be grumpy, be positive!
The Japanese bridge'll be waiting for you.
From Otemachi station (T09) I follow the Tonzai line in the positive direction to Nihombashi (T10). Nihombashi can be translated as "Japanese Bridge.")
Now take the route to the gold.
To reach the gold-colored Yurakucho line from Nihombashi, in a positive way, I will first continue following the sky blue Tonzai line in a positive direction from Nihombashi (T10) to Monzen-nakacho station (T12), then transfer to magenta Oedo line and travel up from Monzen-nakacho station (E15) to Tsukishima station (E16) which connects to the gold Yurakucho line.
Till you descend upon the loop.
The loop line in the Tokyo railway system is the Yamanote Line (JY). From Tsukishima station (Y21) I will follow the Yurakochu line and go in a negative direction, so descend to the Yurakucho station (Y18), which connects to the Yamanote loop.
Now which station are you at? Check! It should be on the loop, I say. And it should be near a JR line.
I am now at the Yurakucho station (Y18), which is on the Yamanote loop. Which is only one station away from the Keiyo Line.