<s>
is	O
a	O
Japanese	O
adult	B-Application
visual	O
novel	O
developed	O
by	O
Moonstone	O
which	O
was	O
released	O
on	O
August	O
24	O
,	O
2007	O
playable	O
on	O
Windows	B-Application
as	O
a	O
DVD	O
.	O
</s>
<s>
An	O
all	O
ages	O
version	O
of	O
Clear	O
,	O
published	O
by	O
Sweets	O
,	O
was	O
released	O
on	O
February	O
19	O
,	O
2009	O
for	O
the	O
PlayStation	B-Device
2	I-Device
.	O
</s>
<s>
Clear	O
is	O
Moonstone	O
's	O
sixth	O
game	O
;	O
Moonstone	O
has	O
also	O
developed	O
Gift	B-Application
.	O
</s>
<s>
Kōichi	O
is	O
not	O
a	O
normal	O
human	O
;	O
he	O
is	O
a	O
type	O
of	O
blood-sucking	O
vampire	B-Application
,	O
though	O
he	O
cannot	O
attack	O
people	O
,	O
due	O
to	O
a	O
certain	O
rule	O
.	O
</s>
<s>
She	O
has	O
amnesia	B-Application
so	O
has	O
become	O
a	O
live-in	O
maid	O
until	O
she	O
can	O
remember	O
anything	O
about	O
her	O
old	O
life	O
.	O
</s>
<s>
The	O
game	O
was	O
produced	O
by	O
Hotaru	O
Koizumi.Clear	O
was	O
first	O
introduced	O
in	O
Japan	O
,	O
in	O
limited	O
and	O
regular	O
editions	O
,	O
on	O
August	O
24	O
,	O
2007	O
as	O
a	O
DVD	O
playable	O
on	O
a	O
Windows	B-Application
PC	I-Application
.	O
</s>
<s>
An	O
all	O
ages	O
version	O
of	O
Clear	O
,	O
titled	O
,	O
was	O
released	O
on	O
February	O
19	O
,	O
2009	O
for	O
the	O
PlayStation	B-Device
2	I-Device
by	O
Sweets	O
.	O
</s>
<s>
On	O
May	O
3	O
,	O
2008	O
,	O
Moonstone	O
released	O
a	O
fan	O
disc	O
titled	O
for	O
Windows	B-Application
PCs	I-Application
as	O
a	O
DVD	O
.	O
</s>
<s>
3	O
in	O
the	O
PC	B-Device
sales	O
ranking	O
of	O
August	O
2007	O
.	O
</s>
<s>
23	O
in	O
the	O
PC	B-Device
sales	O
ranking	O
of	O
2007	O
.	O
</s>
