“Unhappy ♪” Character Song Series 4 Hanako & Lark & Botan
“Unhappy ♪” Character Song Series 5 Hibiki & Len
“Unhappy ♪” Character Song Series 4 Hanako & Lark & Botan
“Unhappy ♪” Character Song Series 5 Hibiki & Len
“Unhappy ♪” Units Song 1 Hanako & Botan & Len
“Unhappy ♪” Units Song 2 Lark & Hibiki
“Unhappy ♪” Happening Lucky Rhapsody