<s>
is	O
a	O
video	O
game	O
developed	O
by	O
Millennium	O
Kitchen	O
and	O
published	O
by	O
Sony	O
Computer	O
Entertainment	O
for	O
the	O
PlayStation	B-Device
2	I-Device
.	O
</s>
<s>
It	O
is	O
part	O
of	O
the	O
popular	O
Boku	B-Application
no	I-Application
Natsuyasumi	I-Application
series	O
and	O
was	O
released	O
in	O
Japan	O
on	O
July	O
11	O
,	O
2002	O
.	O
</s>
<s>
It	O
is	O
an	O
alternate	O
universe	O
sequel	B-Language
in	O
which	O
the	O
main	O
character	O
spends	O
his	O
summer	O
in	O
a	O
different	O
part	O
of	O
Japan	O
from	O
the	O
first	O
game	O
.	O
</s>
<s>
A	O
PlayStation	B-Operating_System
Portable	I-Operating_System
version	O
was	O
released	O
on	O
June	O
24	O
,	O
2010	O
.	O
</s>
<s>
In	O
Japan	O
,	O
sales	O
of	O
Boku	B-Application
no	I-Application
Natsuyasumi	I-Application
2	I-Application
surpassed	O
250,000	O
copies	O
after	O
only	O
17	O
days	O
on	O
shelves	O
.	O
</s>
