https://www.youtube.com/watch?v=v1HjFESC-YI (Usami birthday cover)

https://www.youtube.com/watch?v=w6zRaF1qiTw (Nagao, Trout, Milan, Ness)
https://www.youtube.com/watch?v=23uQWGRdlvs (Nonoha)
https://www.youtube.com/watch?v=g2gsh07RlSw (Chaika)
https://www.youtube.com/watch?v=YvAkIHHiaFQ (Rion)