<s>
is	O
a	O
freeware	B-License
horror	B-Application
game	I-Application
developed	O
by	O
"	O
noprops	O
"	O
.	O
</s>
<s>
Upon	O
entering	O
the	O
mansion	O
,	O
the	O
group	O
discovers	O
that	O
it	O
is	O
home	O
to	O
a	O
mysterious	O
creature	O
referred	O
to	O
as	O
the	O
Ao	B-Application
Oni	I-Application
( 青鬼	O
in	O
Japanese	O
,	O
literally	O
"	O
Blue	O
Demon	O
"	O
)	O
a	O
tall	O
humanoid	O
with	O
a	O
deformed	O
face	O
that	O
proceeds	O
to	O
chase	O
the	O
player	O
throughout	O
the	O
mansion	O
.	O
</s>
<s>
The	O
creature	O
(	O
the	O
Ao	B-Application
Oni	I-Application
)	O
will	O
begin	O
to	O
chase	O
the	O
player	O
at	O
both	O
random	O
and	O
scripted	O
moments	O
,	O
similar	O
to	O
the	O
Nemesis	O
in	O
Resident	B-Application
Evil	I-Application
3	I-Application
.	O
</s>
<s>
The	O
series	O
is	O
made	O
up	O
of	O
five	O
novels	O
,	O
which	O
J-Novel	O
Club	O
released	O
between	O
2018	O
and	O
2019	O
:	O
Ao	B-Application
Oni	I-Application
,	O
Ao	B-Application
Oni	I-Application
:	O
Vengeance	O
,	O
Ao	B-Application
Oni	I-Application
:	O
Mutation	O
,	O
Ao	B-Application
Oni	I-Application
:	O
Grudge	O
,	O
and	O
Ao	B-Application
Oni	I-Application
:	O
Forever	O
.	O
</s>
<s>
In	O
2018	O
PHP	O
Laboratory	O
began	O
publishing	O
a	O
series	O
of	O
junior	O
novels	O
based	O
on	O
the	O
Ao	B-Application
Oni	I-Application
series	O
.	O
</s>
<s>
Ao	B-Application
Oni	I-Application
Demon	O
Research	O
Club	O
Defeat	O
the	O
Monsters	O
of	O
Jailhouse	O
!	O
)	O
</s>
<s>
Ao	B-Application
Oni	I-Application
was	O
adapted	O
into	O
a	O
live	O
action	O
film	O
of	O
the	O
same	O
name	O
,	O
that	O
was	O
released	O
in	O
Japan	O
on	O
5	O
July	O
2014	O
.	O
</s>
<s>
The	O
game	O
gained	O
a	O
cult	O
following	O
online	O
in	O
Japan	O
,	O
gaining	O
notoriety	O
through	O
websites	O
such	O
as	O
Niconico	O
and	O
YouTube	B-General_Concept
where	O
Ao	O
Oni-related	O
videos	O
exceeded	O
50	O
million	O
views	O
by	O
2013	O
.	O
</s>
