神曲奏界polyphonica（神曲奏界ポリフォニカ 3&4話 完結編）
Song of Wave
The insert song used in "Episodes 3 & 4 Finale" was once offered in a short version of the official website.
Shinkyoku Soukai Polyphonica (Shinkyoku Soukai Polyphonica Episodes 3 & 4 Final Chapter)
"Polyphonica Episodes 3 & 4: The Final Chapter" continues from the previous two episodes, bringing the crisis toward the Divine Comedy Academy to a close-knit story set during their student days.