<s>
is	O
a	O
Japanese	O
adult	B-Application
visual	O
novel	O
developed	O
and	O
published	O
by	O
Leaf	O
.	O
</s>
<s>
The	O
game	O
was	O
released	O
in	O
both	O
CD-ROM	B-Device
and	O
DVD	O
formats	O
on	O
September	O
26	O
,	O
2003	O
.	O
</s>
<s>
His	O
role	O
is	O
minimal	O
for	O
the	O
most	O
part	O
,	O
but	O
serves	O
as	O
the	O
adult	B-Application
figure	O
amidst	O
the	O
chaotic	O
events	O
of	O
the	O
game	O
.	O
</s>
<s>
"	O
December	B-Application
When	I-Application
There	I-Application
Is	I-Application
No	I-Application
Angel	I-Application
"	O
has	O
two	O
theme	O
songs	O
,	O
an	O
opening	O
theme	O
named	O
"	O
I	O
Hope	O
So	O
,	O
"	O
and	O
an	O
ending	O
theme	O
named	O
.	O
</s>
