O.P.E.N.

O.P.E.N. a song by Sigma-T on BeMusic

O.P.E.N. by Sigma-T ,
Stimulation by Sigma-T , Nerubeats ,
LOADING by Sigma-T ,
いったりきたり by Sigma-T ,
晩餐会 by Sigma-T , Nerubeats ,
イルミネーション今夜だけ by Sigma-T , Nerubeats , Akusa ,
シアター by Sigma-T ,