<s>
It	O
is	O
based	O
on	O
the	O
video	O
game	O
of	O
the	O
same	O
name	O
released	O
on	O
December	O
15	O
,	O
2016	O
in	O
Japan	O
for	O
iOS	B-Operating_System
,	O
Android	B-Application
,	O
PC	B-Device
;	O
and	O
ended	O
its	O
service	O
on	O
December	O
31	O
,	O
2017	O
.	O
</s>
<s>
Although	O
mankind	O
tries	O
to	O
oppose	O
them	O
by	O
releasing	O
a	O
large	O
number	O
of	O
Ectis	O
,	O
a	O
type	O
of	O
battle	O
android	B-Application
,	O
they	O
are	O
undeniably	O
inferior	O
to	O
face	O
the	O
Fiarem	O
,	O
which	O
are	O
over	O
tall	O
and	O
overwhelmingly	O
powerful	O
.	O
</s>
<s>
Brimming	O
with	O
curiosity	O
and	O
able	O
to	O
quickly	O
take	O
action	B-Application
,	O
she	O
's	O
also	O
fascinated	O
by	O
the	O
commoners	O
 '	O
way	O
of	O
life	O
.	O
</s>
<s>
The	O
anime	O
is	O
based	O
on	O
a	O
3D	O
real-time	O
battle	O
action	B-Application
game	I-Application
of	O
the	O
same	O
name	O
for	O
iOS	B-Operating_System
,	O
Android	B-Application
,	O
and	O
PC	B-Device
.	O
</s>
<s>
Ragnastrike	B-Application
Angels	I-Application
officially	O
terminated	O
its	O
service	O
.	O
</s>
