from the picture, my theory is that:

1. somehow i got the feeling that the original Inori died but they managed to clone her or did something something to her like implanting the ultimate Void, hence the 'Inori' at the present because in the pic, Inori looks more grown up than Shuu.
2. maybe Haruka is not her real mom, the present Haruka is Shuu's aunt or something like that (twins theory)
3. that half-body pic probably is Gai.

twins that act as a real mom.. too much Aki Sora i guess.