<s>
is	O
a	O
free-to-play	O
mobile	O
video	O
game	O
for	O
iOS	B-Application
and	O
Android	B-Application
published	O
by	O
Akatsuki	O
and	O
Kadokawa	O
.	O
</s>
<s>
Tsubasa	O
is	O
a	O
spirited	O
girl	O
who	O
founds	O
the	O
girls	O
 '	O
baseball	B-Application
team	O
and	O
seeks	O
to	O
make	O
friends	O
and	O
have	O
them	O
join	O
.	O
</s>
<s>
Yuuki	O
changes	O
her	O
mind	O
and	O
joins	O
the	O
baseball	B-Application
team	O
after	O
seeing	O
how	O
everyone	O
is	O
supportive	O
and	O
refuses	O
to	O
judge	O
one	O
another	O
's	O
failures	O
.	O
</s>
<s>
Akane	O
is	O
untalented	O
at	O
baseball	B-Application
,	O
but	O
quickly	O
improves	O
as	O
she	O
tries	O
her	O
best	O
.	O
</s>
<s>
A	O
tsundere	O
girl	O
who	O
is	O
talented	O
at	O
observation	O
and	O
baseball	B-Application
strategy	O
,	O
but	O
must	O
be	O
convinced	O
to	O
actually	O
play	O
after	O
being	O
let	O
down	O
in	O
childhood	O
.	O
</s>
<s>
Her	O
supportive	O
brother	O
is	O
part	O
of	O
a	O
prestigious	O
university	O
baseball	B-Application
team	O
.	O
</s>
<s>
A	O
quiet	O
second-year	O
girl	O
and	O
Yūki	O
's	O
classmate	O
in	O
elementary	O
school	O
who	O
excels	O
in	O
various	O
sports	O
like	O
dodgeball	B-Application
.	O
</s>
<s>
The	O
mobile	O
game	O
published	O
by	O
Akatsuki	O
and	O
Kadokawa	O
was	O
released	O
for	O
iOS	B-Application
and	O
Android	B-Application
on	O
June	O
27	O
,	O
2017	O
.	O
</s>
<s>
Another	O
spin-off	O
manga	O
,	O
titled	O
Hachigatsu	B-Application
no	I-Application
Cinderella	I-Application
Nine	I-Application
S	O
,	O
written	O
and	O
illustrated	O
by	O
Kōichirō	O
Hoshino	O
began	O
serialization	O
in	O
Akita	O
Shoten	O
's	O
Weekly	O
Shōnen	O
Champion	O
on	O
August	O
19	O
,	O
2021	O
.	O
</s>
<s>
A	O
novelization	O
titled	O
Hachigatsu	B-Application
no	I-Application
Cinderella	I-Application
Nine	I-Application
:	O
Before	O
Summer	O
is	O
also	O
being	O
serialized	O
on	O
the	O
official	O
website	O
alongside	O
the	O
four-panel	O
manga	O
.	O
</s>
<s>
An	O
original	O
net	O
animation	O
adaptation	O
of	O
the	O
four-panel	O
manga	O
titled	O
Katato	O
the	O
Animation	O
was	O
streamed	O
on	O
the	O
game	O
's	O
official	O
website	O
and	O
YouTube	B-General_Concept
channel	I-General_Concept
between	O
May	O
and	O
June	O
2017	O
with	O
four	O
short	O
episodes	O
.	O
</s>
<s>
On	O
July	O
30	O
,	O
2018	O
,	O
the	O
official	O
Twitter	B-Application
account	I-Application
of	O
the	O
original	O
game	O
announced	O
that	O
an	O
anime	O
television	O
series	O
adaptation	O
of	O
the	O
game	O
would	O
be	O
produced	O
.	O
</s>
