D.C.II S.S.: Da Capo II Second Season EP4 - The Shape of Happiness

The day of the Christmas Party has arrived at Kazumi Academy and Yume still hasn't asked Yoshiyuki if he wants to go with her. Yoshiyuki instead asks her if she's going with anyone, and Yume accepts him and have fun together. Unfortunately, Koko faints before the puppet show starts. Yoshiyuki requests Otome to fill the role of Koko in the play since she has the lines memorized with "one heart and one soul". The episode ended with the play being successful.