<s>
is	O
a	O
Japanese	O
adult	B-Application
visual	O
novel	O
developed	O
by	O
Innocent	O
Grey	O
.	O
</s>
<s>
It	O
was	O
released	O
on	O
December	O
11	O
,	O
2009	O
for	O
Microsoft	B-Application
Windows	I-Application
.	O
</s>
