<s>
Dragon	B-Application
Knight	I-Application
4	I-Application
( ドラゴンナイト４	O
)	O
is	O
an	O
erotic	O
role-playing	O
video	O
game	O
developed	O
by	O
ELF	O
Corporation	O
and	O
released	O
only	O
in	O
Japan	O
for	O
several	O
platforms	O
between	O
1994	O
and	O
1997	O
.	O
</s>
<s>
In	O
1994	O
,	O
the	O
game	O
first	O
became	O
available	O
for	O
PC	B-Application
MS-DOS	I-Application
,	O
NEC	B-Operating_System
PC-9801	I-Operating_System
and	O
X68000	B-Device
,	O
with	O
a	O
censored	O
version	O
ported	O
to	O
the	O
Super	B-Application
Nintendo	I-Application
Entertainment	I-Application
System	I-Application
in	O
1996	O
and	O
later	O
to	O
the	O
PC-FX	B-Device
,	O
PlayStation	B-Device
and	O
Sega	B-Device
Saturn	I-Device
in	O
1997	O
.	O
</s>
<s>
Dragon	B-Application
Knight	I-Application
4	I-Application
is	O
a	O
continuation	O
of	O
the	O
Dragon	B-Application
Knight	I-Application
series	O
,	O
and	O
a	O
sequel	O
to	O
Knights	B-Application
of	I-Application
Xentar	I-Application
.	O
</s>
<s>
Dragon	B-Application
Knight	I-Application
4	I-Application
has	O
a	O
new	O
protagonist	O
,	O
Kakeru	O
,	O
the	O
son	O
of	O
Takeru	O
from	O
the	O
previous	O
games	O
.	O
</s>
<s>
The	O
central	O
character	O
of	O
Dragon	B-Application
Knight	I-Application
4	I-Application
is	O
Kakeru	O
( カケル	O
)	O
(	O
voiced	O
by	O
Megumi	O
Ogata	O
)	O
,	O
the	O
son	O
of	O
Yamato	O
Takeru	O
,	O
the	O
protagonist	O
of	O
the	O
earlier	O
games	O
in	O
the	O
series	O
,	O
and	O
the	O
sorceress	O
Luna	O
.	O
</s>
<s>
The	O
original	O
DOS	B-Device
,	O
FM	B-Device
Towns	I-Device
and	O
PC-98	B-Operating_System
versions	O
of	O
the	O
game	O
feature	O
erotic	O
scenes	O
.	O
</s>
<s>
Banpresto	O
removed	O
these	O
aspects	O
before	O
re-publishing	O
the	O
game	O
for	O
the	O
SNES	B-Application
,	O
PC-FX	B-Device
and	O
PlayStation	B-Device
platforms	O
.	O
</s>
<s>
The	O
original	O
soundtrack	O
Dragon	B-Application
Knight	I-Application
4	I-Application
Complete	O
Music	O
File	O
was	O
released	O
by	O
NEC	O
Avenue	O
.	O
</s>
<s>
Retro	O
Gamer	O
included	O
it	O
on	O
their	O
list	O
of	O
Top	O
Ten	O
PC-FX	B-Device
Games	O
,	O
commenting	O
that	O
"	O
visually	O
this	O
is	O
one	O
of	O
the	O
more	O
attractive	O
PC-FX	B-Device
titles	O
available	O
and	O
it	O
's	O
ably	O
assisted	O
by	O
a	O
moderately	O
deep	O
and	O
engaging	O
battle	O
system	O
,	O
not	O
to	O
mention	O
a	O
half-decent	O
storyline.	O
"	O
</s>
