<s>
is	O
a	O
Tactical	O
role-playing	O
game	O
developed	O
by	O
Entertainment	O
Software	O
Publishing	O
and	O
published	O
by	O
Kadokawa	O
Shoten	O
for	O
the	O
PlayStation	B-Device
.	O
</s>
<s>
A	O
six	O
episode	O
original	O
video	O
animation	O
(	O
OVA	O
)	O
sequel	O
,	O
Gate	B-Application
Keepers	I-Application
21	O
,	O
was	O
released	O
in	O
2002	O
.	O
</s>
<s>
The	O
main	O
characters	O
in	O
the	O
OVA	O
sequel	O
were	O
the	O
next	O
generation	O
of	O
Gate	B-Application
Keepers	I-Application
.	O
</s>
<s>
All	O
Gate	B-Application
Keepers	I-Application
series	O
follow	O
the	O
same	O
basic	O
premise	O
and	O
share	O
most	O
of	O
their	O
characters	O
,	O
with	O
some	O
major	O
discrepancies	O
(	O
mainly	O
involving	O
the	O
character	O
Reiji	O
Kageyama	O
)	O
.	O
</s>
<s>
They	O
rely	O
on	O
the	O
ability	O
of	O
"	O
Gate	B-Application
Keepers	I-Application
"	O
,	O
who	O
have	O
the	O
power	O
to	O
open	O
dimensional	O
"	O
gates	O
"	O
of	O
a	O
paranormal	O
energy	O
that	O
give	O
them	O
their	O
superpowers	O
.	O
</s>
<s>
lies	O
beneath	O
Tategami	O
High	O
School	O
,	O
a	O
facade	O
created	O
by	O
the	O
organization	O
to	O
mask	O
the	O
active	O
recruitment	O
of	O
new	O
Gate	B-Application
Keepers	I-Application
.	O
</s>
<s>
Shun	B-Application
Ukiya	I-Application
,	O
the	O
focus	O
of	O
the	O
series	O
,	O
is	O
a	O
young	O
Japanese	O
schoolboy	O
(	O
who	O
permanently	O
wears	O
a	O
bandage	O
over	O
his	O
nose	O
,	O
the	O
only	O
exception	O
being	O
his	O
appearance	O
in	O
the	O
final	O
chapter	O
of	O
Gatekeepers	B-Application
21	O
)	O
with	O
a	O
deep	O
passion	O
for	O
kendo	O
.	O
</s>
<s>
Shun	O
discovers	O
that	O
he	O
has	O
the	O
ability	O
to	O
open	O
the	O
Gate	O
of	O
Gales	O
in	O
a	O
chance	O
encounter	O
with	O
an	O
Invader	O
attack	O
near	O
his	O
hometown	O
,	O
where	O
he	O
meets	O
fellow	O
Gate	O
Keeper	O
and	O
childhood	O
friend	O
,	O
Ruriko	B-Application
Ikusawa	I-Application
.	O
</s>
<s>
Ruriko	O
is	O
one	O
of	O
the	O
first	O
Gate	B-Application
Keepers	I-Application
recruited	O
in	O
Japan	O
by	O
A.E.G.I.S.	O
</s>
<s>
She	O
is	O
the	O
only	O
Gate	O
Keeper	O
other	O
than	O
Shun	B-Application
Ukiya	I-Application
who	O
has	O
operated	O
the	O
prototype	O
Unit	O
00	O
Gate	O
Robo	O
,	O
and	O
the	O
only	O
one	O
to	O
pilot	O
a	O
jet	O
aircraft	O
.	O
</s>
<s>
but	O
does	O
not	O
appear	O
to	O
be	O
particularly	O
interested	O
in	O
socializing	O
with	O
her	O
fellow	O
Gate	B-Application
Keepers	I-Application
.	O
</s>
<s>
agent	O
—	O
but	O
was	O
once	O
confused	O
with	O
Shun	B-Application
Ukiya	I-Application
)	O
,	O
often	O
helps	O
her	O
target	O
Red	O
Invaders	O
.	O
</s>
<s>
However	O
,	O
she	O
has	O
stopped	O
aging	O
and	O
appears	O
in	O
1969	O
as	O
a	O
young	O
girl	O
in	O
a	O
white	O
kimono	O
(	O
and	O
again	O
in	O
Gate	B-Application
Keepers	I-Application
21	O
without	O
any	O
trace	O
of	O
aging	O
)	O
.	O
</s>
<s>
She	O
is	O
one	O
of	O
the	O
most	O
powerful	O
Gate	B-Application
Keepers	I-Application
in	O
the	O
series	O
,	O
being	O
referred	O
to	O
as	O
a	O
'	O
top-secret	O
,	O
High-Level	O
Gate	O
Keeper	O
A.E.G.I.S.	O
</s>
<s>
She	O
returns	O
in	O
Gate	B-Application
Keepers	I-Application
21	O
.	O
</s>
<s>
With	O
the	O
mindset	O
of	O
a	O
samurai	B-Application
,	O
Bancho	O
likens	O
the	O
girls	O
in	O
the	O
Gate	B-Application
Keepers	I-Application
team	O
as	O
princesses	O
and	O
himself	O
as	O
their	O
hero	O
.	O
</s>
<s>
In	O
both	O
the	O
game	O
and	O
anime	O
he	O
helps	O
the	O
Gate	B-Application
Keepers	I-Application
by	O
bringing	O
the	O
Gate	O
Engine	O
or	O
Gate	O
Robo	O
to	O
them	O
,	O
even	O
restoring	O
an	O
out-of-commission	O
Gate	O
Robo	O
(	O
after	O
the	O
battle	O
at	O
the	O
Tokyo	O
Tower	O
)	O
.	O
</s>
<s>
Far-East	O
Branch	O
oversees	O
the	O
operations	O
and	O
deployments	O
of	O
Japan	O
's	O
Gate	B-Application
Keepers	I-Application
.	O
</s>
<s>
In	O
the	O
PlayStation	B-Device
Gate	B-Application
Keepers	I-Application
RPG	O
and	O
the	O
Gate	B-Application
Keepers	I-Application
1985	O
novel	O
,	O
it	O
is	O
revealed	O
that	O
the	O
Commander	O
's	O
name	O
is	O
and	O
he	O
has	O
the	O
Gate	O
of	O
Time	O
and	O
Space	O
.	O
</s>
<s>
She	O
hates	O
violence	O
and	O
acts	O
as	O
an	O
adviser	O
to	O
the	O
Gate	B-Application
Keepers	I-Application
(	O
both	O
at	O
school	O
and	O
when	O
they	O
perform	O
their	O
Gate	O
Keeper	O
duties	O
)	O
.	O
</s>
<s>
The	O
Gate	O
of	O
Darkness	O
allows	O
him	O
to	O
do	O
many	O
things	O
unavailable	O
to	O
the	O
other	O
Gate	B-Application
Keepers	I-Application
.	O
</s>
<s>
He	O
returns	O
in	O
Gate	B-Application
Keepers	I-Application
21	O
as	O
a	O
middle-aged	O
businessman	O
working	O
for	O
A.E.G.I.S.	O
</s>
<s>
He	O
once	O
even	O
had	O
the	O
Gate	B-Application
Keepers	I-Application
in	O
his	O
trap	O
.	O
</s>
<s>
He	O
returns	O
in	O
Gate	B-Application
Keepers	I-Application
21	O
to	O
battle	O
his	O
archenemy	O
's	O
daughter	O
,	O
only	O
to	O
be	O
defeated	O
.	O
</s>
<s>
He	O
was	O
said	O
to	O
have	O
caused	O
the	O
disappearance	O
of	O
the	O
SS	O
Marine	O
Sulphur	O
Queen	O
in	O
the	O
Bermuda	B-Application
Triangle	I-Application
and	O
made	O
it	O
resurface	O
6	O
years	O
later	O
standing	O
up	O
in	O
Yokohama	O
Bay	O
.	O
</s>
<s>
He	O
also	O
returns	O
in	O
Gate	B-Application
Keepers	I-Application
21	O
only	O
to	O
be	O
defeated	O
by	O
the	O
daughter	O
of	O
the	O
man	O
who	O
defeated	O
him	O
,	O
with	O
the	O
gate	O
engine	O
.	O
</s>
<s>
It	O
was	O
slain	O
by	O
Shun	B-Application
Ukiya	I-Application
right	O
in	O
front	O
of	O
Megumi	O
.	O
</s>
<s>
She	O
also	O
appears	O
in	O
Gate	B-Application
Keepers	I-Application
21	O
as	O
Ayane	O
's	O
aunt	O
.	O
</s>
<s>
Combined	O
together	O
in	O
Fusion	O
Mode	O
,	O
they	O
create	O
the	O
more	O
powerful	O
and	O
larger	O
versions	O
of	O
Invaders	O
of	O
which	O
can	O
take	O
multiple	O
forms	O
like	O
centipedes	B-Application
,	O
balls	O
,	O
and	O
fake	O
highways	O
.	O
</s>
<s>
Feng	O
Fei	O
Ling	O
initially	O
thought	O
that	O
its	O
keeper	O
,	O
a	O
vendor	O
of	O
stone-roasted	O
yams	O
,	O
was	O
the	O
Invader	O
,	O
but	O
it	O
revealed	O
itself	O
after	O
being	O
confronted	O
by	O
Shun	O
and	O
the	O
other	O
Gatekeepers	B-Application
.	O
</s>
<s>
It	O
turned	O
into	O
a	O
dinosaur	O
then	O
into	O
a	O
Concorde	O
when	O
Shun	B-Application
Ukiya	I-Application
shot	O
one	O
of	O
its	O
engines	O
and	O
crashed	O
.	O
</s>
<s>
Also	O
appearing	O
in	O
Europe	O
,	O
this	O
one	O
is	O
commandeered	O
by	O
Kaiser	O
Kikai	O
himself	O
and	O
merged	O
with	O
a	O
junked	O
battleship	B-Application
on	O
Dream	O
Island	O
.	O
</s>
<s>
Using	O
this	O
device	O
,	O
Konoe	O
Kaoru	O
was	O
able	O
to	O
stop	O
a	O
runaway	O
Shinkansen	O
a	O
la	O
Superman	B-Application
,	O
and	O
Fei	O
Fen	O
Ring	O
was	O
able	O
to	O
down	O
the	O
Concorde-shaped	O
Invader	O
.	O
</s>
<s>
It	O
is	O
a	O
modified	O
Toyota	O
Sports	O
800	O
bearing	O
the	O
license	O
plate	O
AEGIS	O
01	O
,	O
powered	O
by	O
a	O
Gate	O
Engine	O
,	O
and	O
is	O
capable	O
of	O
using	O
Shun	B-Application
Ukiya	I-Application
's	O
Gate	O
of	O
Gales	O
to	O
reach	O
incredible	O
speeds	O
.	O
</s>
<s>
As	O
of	O
Gate	B-Application
Keepers	I-Application
21	O
,	O
it	O
was	O
the	O
only	O
working	O
mecha	O
remaining	O
inside	O
the	O
ruins	O
of	O
A.E.G.I.S.	O
</s>
<s>
Twin-rotor	O
helicopter	B-Application
used	O
to	O
transport	O
personnel	O
and	O
heavy	O
cargo	O
,	O
including	O
the	O
Gate	O
Engine	O
and	O
the	O
GRO5V	O
.	O
</s>
<s>
Issued	O
to	O
Shun	B-Application
Ukiya	I-Application
,	O
it	O
contains	O
a	O
tiny	O
Gate	O
amplifier	O
in	O
its	O
tip	O
to	O
supplement	O
his	O
kendo	O
attacks	O
with	O
his	O
Gate	O
ability	O
.	O
</s>
<s>
Gate	B-Application
Keepers	I-Application
1985	O
(	O
-C0193	O
)	O
tells	O
the	O
story	O
of	O
the	O
15	O
years	O
leading	O
up	O
to	O
Gate	B-Application
Keepers	I-Application
21	O
.	O
</s>
