Blue Orchestra
Blue Orchestra is a manga series.
Also recorded as Ao no Orchestra.
In detail
It is recorded as the work of Makoto Akui. The recorded language is Japanese.
It is associated with Japan.
Sources
Each source is named with the standing the house places on it, so the evidence can be weighed rather than taken on trust.
reference work · Reputable secondary · Wikipedia
“Blue Orchestra”, English Wikipedia, consulted as further reading
Consult the sourcereference work · Reputable secondary · Wikidata
Wikidata, structured authority record Q102253088: Blue Orchestra
Consult the source