A happy ending, more or less. Kanzaki becomes a vice-principal and keeps in touch with Momoko. Haru has Momoko as his adoptive mom(oko). Wakaba looks to have gotten better. That leaves Momo's brother and of course Asakura as unresolved, although one imagines the brother is doing fine.
A decent work, although I'm left feeling like something was lacking to really make this memorable. Ah well, into the fleeting memory of songs and stories...