<s>
(	O
often	O
abbreviated	O
as	O
LLSIF	O
or	O
Sukufesu	O
)	O
is	O
a	O
Japanese	O
rhythm	O
game	O
series	O
developed	O
by	O
KLab	O
and	O
published	O
by	O
Bushiroad	O
's	O
Bushimo	O
for	O
Android	B-Application
and	O
iOS	B-Application
platforms	O
.	O
</s>
<s>
The	O
original	O
game	O
was	O
first	O
released	O
in	O
Japan	O
on	O
April	O
15	O
,	O
2013	O
(	O
iOS	B-Application
)	O
and	O
June	O
8	O
,	O
2013	O
(	O
Android	B-Application
)	O
.	O
</s>
<s>
The	O
English	O
localization	O
was	O
released	O
worldwide	O
on	O
May	O
11	O
,	O
2014	O
,	O
for	O
iOS	B-Application
and	O
Android	B-Application
devices	O
.	O
</s>
<s>
School	O
Idol	O
Festival	O
:	O
After	O
School	O
Activity	O
(	O
developed	O
and	O
published	O
by	O
Square	O
Enix	O
)	O
was	O
released	O
on	O
December	O
6	O
,	O
2016	O
,	O
in	O
Japan	O
,	O
and	O
a	O
PlayStation	B-Operating_System
4	I-Operating_System
port	O
was	O
released	O
in	O
North	O
America	O
,	O
Japan	O
,	O
and	O
Southeast	O
Asia	O
on	O
March	O
24	O
,	O
2021	O
.	O
</s>
<s>
The	O
collaboration	O
event	O
with	O
mobile	O
TCG	O
,	O
Shadowverse	B-Application
,	O
was	O
held	O
in	O
both	O
of	O
the	O
games	O
(	O
September	O
20	O
–	O
30	O
within	O
the	O
School	O
Idol	O
Festival	O
app	O
)	O
.	O
</s>
<s>
The	O
arcade	O
game	O
titled	O
(	O
often	O
abbreviated	O
as	O
SIFAC	O
or	O
Sukufesu	O
AC	O
)	O
is	O
a	O
joint	O
development	O
with	O
Square	O
Enix	O
and	O
operates	O
using	O
NESiCA	B-Application
Cards	I-Application
.	O
</s>
<s>
The	O
arcade	O
version	O
has	O
been	O
ported	O
to	O
PlayStation	B-Operating_System
4	I-Operating_System
under	O
the	O
title	O
released	O
digitally	O
in	O
North	O
America	O
,	O
Japan	O
,	O
and	O
Southeast	O
Asia	O
on	O
March	O
24	O
,	O
2021	O
.	O
</s>
<s>
In	O
the	B-Operating_System
PlayStation	I-Operating_System
4	I-Operating_System
version	O
,	O
the	O
amount	O
of	O
buttons	O
played	O
depends	O
on	O
the	O
selected	O
difficulty.	O
|alt	O
=	O
The	O
player	O
is	O
playing	O
"	O
Yume	O
no	O
Tobira	O
"	O
with	O
four	O
buttons	O
,	O
hitting	O
Perfects	O
.	O
</s>
<s>
It	O
was	O
released	O
in	O
North	O
America	O
,	O
Japan	O
,	O
and	O
Southeast	O
Asia	O
on	O
March	O
24	O
,	O
2021	O
,	O
for	O
PlayStation	B-Operating_System
4	I-Operating_System
.	O
</s>
<s>
The	O
game	O
is	O
natively	O
backward	B-General_Concept
compatible	I-General_Concept
with	O
PlayStation	B-Device
5	I-Device
.	O
</s>
<s>
Additional	O
songs	O
are	O
available	O
as	O
paid	O
downloadable	B-Protocol
content	I-Protocol
(	O
DLC	B-Protocol
)	O
.	O
</s>
<s>
At	O
the	O
release	O
,	O
21	O
Song	O
Pack	O
DLCs	B-Protocol
(	O
13	O
for	O
μ	O
's	O
,	O
and	O
9	O
for	O
Aqours	O
/	O
Saint	O
Snow	O
;	O
117	O
songs	O
in	O
total	O
)	O
became	O
available	O
.	O
</s>
<s>
Alternatively	O
the	O
player	O
can	O
also	O
purchase	O
the	O
costume	O
sets	O
as	O
DLC	B-Protocol
immediately	O
.	O
</s>
<s>
An	O
infamous	O
bug	B-Error_Name
occurred	O
in	O
the	O
first	O
day	O
after	O
the	O
Next	O
Stage	O
update	O
had	O
been	O
released	O
for	O
the	O
arcades	O
in	O
2018	O
,	O
wherein	O
sometimes	O
the	O
characters	O
appeared	O
to	O
be	O
naked	O
during	O
the	O
dance	O
sequences	O
.	O
</s>
<s>
This	O
bug	B-Error_Name
was	O
widely	O
shared	O
on	O
Twitter	B-Application
as	O
screenshots	O
and	O
clips	O
of	O
dancing	O
"	O
Barbie	O
doll-esque	O
"	O
nude	O
characters	O
during	O
gameplay	O
had	O
been	O
spread	O
across	O
it	O
.	O
</s>
<s>
This	O
bug	B-Error_Name
caused	O
Square	O
Enix	O
to	O
take	O
the	O
game	O
server	O
in	O
"	O
urgent	O
maintenance	O
"	O
for	O
few	O
days	O
in	O
order	O
to	O
fix	O
the	O
bug	B-Error_Name
.	O
</s>
<s>
School	O
Idol	O
Festival	O
All	O
Stars	O
became	O
a	O
trending	O
on	O
a	O
video	O
sharing	O
platform	O
TikTok	B-Application
in	O
October	O
2021	O
.	O
</s>
