Who am I? 4

この問題は以前出したことが

ありますから、おぼえている人も

いるかもしれませんが、

人間ではありません。

When I first came to Japan,

our group landed on a small island

close to Kyushu.

Since then,

we have been called

by the name of the small island

which we first arrived on.　

Afterwards I was sent

to an ingenious leader,

who liked me very much.

Right after he received me,

he found me the greatest invention

and soon he devised a new, efficient way

how to use me.

As he expected,

my wonderful feature came out

in the fighting against Bamboo Field Group.