<s>
It	O
is	O
a	O
spin-off	O
of	O
the	O
Trails	O
series	O
,	O
itself	O
a	O
part	O
The	O
Legend	O
of	O
Heroes	O
franchise	O
,	O
and	O
was	O
first	O
released	O
in	O
Japan	O
for	O
browsers	B-Protocol
.	O
</s>
<s>
Akatsuki	B-Application
no	I-Application
Kiseki	I-Application
was	O
later	O
ported	O
to	O
Windows	O
,	O
PlayStation	B-Device
Vita	I-Device
,	O
PlayStation	B-Operating_System
4	I-Operating_System
,	O
Android	B-Application
,	O
iOS	B-Application
,	O
and	O
Nintendo	B-Application
Switch	I-Application
.	O
</s>
<s>
Akatsuki	B-Application
no	I-Application
Kiseki	I-Application
features	O
a	O
mix	O
of	O
role-playing	O
and	O
simulation	O
elements	O
.	O
</s>
<s>
The	O
two	O
main	O
protagonists	O
are	O
both	O
bracers	O
,	O
harking	O
back	O
to	O
the	O
original	O
Trails	B-Application
in	I-Application
the	I-Application
Sky	I-Application
games	O
.	O
</s>
<s>
For	O
example	O
,	O
as	O
part	O
of	O
UserJoy	O
's	O
pre-release	O
promotion	O
campaign	O
,	O
users	O
who	O
pre-registered	O
for	O
an	O
Akatsuki	O
user	O
ID	O
and	O
followed	O
the	O
game	O
's	O
official	O
Twitter	B-Application
account	I-Application
had	O
Noel	O
Seeker	O
,	O
who	O
first	O
appeared	O
in	O
Trails	B-Application
from	I-Application
Zero	I-Application
,	O
added	O
to	O
their	O
party	O
as	O
a	O
bonus	O
character	O
.	O
</s>
<s>
Akatsuki	B-Application
no	I-Application
Kiseki	I-Application
was	O
first	O
announced	O
in	O
June	O
2014	O
as	O
a	O
project	O
to	O
commemorate	O
the	O
tenth	O
anniversary	O
of	O
the	O
Trails	O
series	O
.	O
</s>
<s>
Though	O
UserJoy	O
rose	O
to	O
fame	O
mainly	O
for	O
PC	O
MMORPGs	B-Application
such	O
as	O
Angel	B-Application
Love	I-Application
Online	I-Application
and	O
The	O
Legend	O
of	O
Three	O
Kingdoms	O
Online	O
,	O
and	O
later	O
began	O
branching	O
out	O
into	O
mobile	B-Application
games	I-Application
,	O
the	O
early	O
press	O
releases	O
did	O
not	O
clarify	O
the	O
platform	B-Device
for	O
Akatsuki	O
,	O
nor	O
whether	O
it	O
would	O
be	O
purely	O
single-player	O
or	O
if	O
it	O
would	O
have	O
some	O
type	O
of	O
online	O
multi-player	O
functionality	O
.	O
</s>
<s>
The	O
two	O
companies	O
remained	O
silent	O
about	O
Akatsuki	B-Application
no	I-Application
Kiseki	I-Application
until	O
December	O
2015	O
,	O
when	O
Falcom	O
announced	O
that	O
the	O
game	O
had	O
been	O
delayed	O
until	O
2016	O
.	O
</s>
<s>
Falcom	O
made	O
no	O
further	O
concrete	O
announcements	O
,	O
only	O
a	O
vague	O
statement	O
in	O
April	O
on	O
Twitter	B-Application
and	O
Facebook	B-Application
that	O
operation	O
might	O
begin	O
soon	O
.	O
</s>
<s>
UserJoy	O
revealed	O
further	O
details	O
at	O
the	O
China	O
Digital	O
Entertainment	O
Expo	O
&	O
Conference	O
in	O
late	O
July	O
,	O
and	O
began	O
tweeting	O
on	O
a	O
dedicated	O
Twitter	B-Application
account	I-Application
for	O
Akatsuki	O
in	O
early	O
August	O
.	O
</s>
<s>
On	O
August	O
9	O
,	O
UserJoy	O
opened	O
the	O
official	O
site	O
for	O
Akatsuki	B-Application
no	I-Application
Kiseki	I-Application
and	O
posted	O
the	O
first	O
promotional	O
video	O
of	O
the	O
game	O
.	O
</s>
<s>
After	O
a	O
brief	O
open	O
beta	O
test	O
,	O
service	O
began	O
on	O
August	O
31	O
as	O
a	O
browser	B-Protocol
game	I-Protocol
requiring	O
the	O
Unity	B-Application
Web	I-Application
Player	I-Application
.	O
</s>
<s>
Falcom	O
subsequently	O
released	O
ports	O
for	O
the	O
PlayStation	B-Device
Vita	I-Device
on	O
December	O
26	O
and	O
the	O
PlayStation	B-Operating_System
3	I-Operating_System
and	O
PlayStation	B-Operating_System
4	I-Operating_System
in	O
2017	O
.	O
</s>
<s>
In	O
June	O
2018	O
,	O
Falcom	O
said	O
that	O
Beijing-based	O
mobile	B-Application
games	I-Application
developer	O
Changyou.com	O
and	O
Shanghai-based	O
video	O
sharing	O
site	O
Bilibili	O
were	O
collaborating	O
to	O
release	O
a	O
Chinese-language	O
adaptation	O
of	O
Akatsuki	O
for	O
smartphones	O
,	O
under	O
the	O
title	O
(	O
)	O
.	O
</s>
<s>
A	O
port	O
for	O
the	O
Nintendo	B-Application
Switch	I-Application
was	O
released	O
in	O
Japan	O
as	O
Akatsuki	B-Application
no	I-Application
Kiseki	I-Application
Mobile	O
on	O
August	O
27	O
,	O
2019	O
.	O
</s>
