<s>
,	O
stylised	O
as	O
htoL	O
#NiQ	O
,	O
is	O
a	O
2014	O
video	O
game	O
created	O
by	O
Japanese	O
game	O
developer	O
Nippon	O
Ichi	O
Software	O
for	O
the	O
PlayStation	B-Device
Vita	I-Device
and	O
Microsoft	B-Application
Windows	I-Application
.	O
</s>
<s>
The	O
game	O
makes	O
use	O
of	O
the	O
PlayStation	B-Device
Vita	I-Device
's	O
touch	O
controls	O
,	O
with	O
the	O
player	O
controlling	O
the	O
firefly	O
with	O
the	O
front	O
touchscreen	O
,	O
and	O
the	O
shadow	O
firefly	O
with	O
the	O
rear	O
touchpad	O
.	O
</s>
<s>
The	O
main	O
staff	O
involved	O
with	O
the	O
project	O
were	O
prior	O
involved	O
in	O
the	O
development	O
of	O
the	O
Disgaea	B-Application
game	O
series	O
.	O
</s>
<s>
The	O
game	O
features	O
support	O
for	O
the	O
PlayStation	B-Device
Vita	I-Device
TV	I-Device
.	O
</s>
<s>
Due	O
to	O
frequent	O
usage	O
of	O
gruesome	O
death	O
scenes	O
,	O
Hotaru	B-Application
no	I-Application
Nikki	I-Application
was	O
given	O
a	O
rating	O
of	O
CERO	O
D	O
(	O
17+	O
)	O
in	O
Japan	O
.	O
</s>
<s>
Whilst	O
the	O
standard	O
version	O
of	O
the	O
game	O
is	O
a	O
digital-only	O
release	O
available	O
as	O
a	O
downloadable	O
purchase	O
from	O
the	O
PlayStation	B-Device
Network	I-Device
,	O
Nippon	O
Ichi	O
Software	O
released	O
a	O
limited	O
batch	O
of	O
special	O
edition	O
sets	O
containing	O
physical	O
cartridge	O
copies	O
of	O
the	O
game	O
through	O
retail	O
stores	O
in	O
Japan	O
,	O
which	O
sold	O
through	O
the	O
majority	O
of	O
its	O
shipment	O
within	O
the	O
first	O
week	O
of	O
release	O
,	O
representing	O
a	O
sell-through	O
of	O
approximately	O
90%	O
of	O
all	O
limited	O
edition	O
copies	O
.	O
</s>
