Tokyo metro puzzle #5

Question

This is based on the first, second, third, and fourth. It will be the finale of the series.

It relies on the answers to the previous four.

1. Takebashi (solved by Nick & Brandon_J)
2. ???
3. Ikebukuro (solved by El-Guest)
4. ???

And here's the map and the riddle:

From the peanut butter cherry, you
Must go down south, and
Descend upon a three-line one,
The first one you may find.

And then lies east of this station
Through greenleaf till gold,
And south we go and south we go
What good sakura we know!

And then leave this part a-lonely
For you must part today,
And then journey to the station
Whose namesake isn't its.

And head upon north till you find
An island full of soup, and
Go back one, and then change courses,
And then go to the one.

And go along south for the ride
You won't be disappointed
And take a stop as soon as you see
That red train a-go!

And part again, and part again
We must find one that's east-west
So long, farewell, M&M
We must find one that fits.

And after that, we subtract one
And turn south-south-south-west.
And on the second step, we say
"Goodbye to all the zazz," for

Then we descend upon fruit
And go back one whole space.
And now let's leave for the final one
We still have one more left, so

Go to the station near the zoo
The one you put in to.
Then negatively travel along the loop we say,
Oh, I'm just a random space.

"Go to the station that we screwed up
And thought it was a lid,"
And head East for your prize, beware
The taken bacon station.

And stop just before you reach it
And go south-south-west one more stop
And there you have it, hooray!
But you need to reduce the four
Down to one single station,
That's up to you, but just remember
That the centroid always counts.

Answer 1

Partial Answer ~

First stanza

From the peanut butter cherry, you

Higashi-shinjuku

Must go down south, and

Descend upon a three-line one,

The first one you may find.

Shinjuku-gyoemmae

Second stanza

And then lies east of this station

Through greenleaf till gold,

Ichigaya

And south we go and south we go

What good sakura we know!

Sakuradamon