One Black,

One White.

Similar,

yet different.

Strong,

yet weak.

Kind,

but rude.

Gentle,

but Firm.

Rough

yet smooth.

One Heads,

One Tails.

Two sides

of the

same coin.

Proud

and Noble.

Defenders

of the weak.

Warriors

against the

Darkness.

Fighters

till the end.

Yuu Kanda,

Allen Walker.

Yin

and

Yang.