Hidden Past - S1.E9

Senna refuses to come out of her room, leaving Junna troubled as he realizes he does not know too much about her. Junna finds the dial Koutarou was talking about in his room, along with old photo albums. The photo albums have no photos of Senna, but have pictures of Haruhi instead. Shocked, Junna takes a walk outside, confused as to why this is so. He happens to meet Haruhi by chance, and the two head out to a café. Junna feels that Haruhi understands why Senna was not in the photo albums and asks her why. Haruhi sadly responds that Senna was not supposed to exist at all. Tomo appears behind Junna explains that like Junna, Senna doesn't have a past, but she does not have a future as well. As Senna emerges from her room, she notices the photo albums and realizes that Junna is coming close to knowing the truth.