I agree that the ending was abrupt, but if I'm honest with myself I'm glad it's finally wrapped up. It felt like the author struggled with keeping it interesting towards the end of this series.
@Zacreg
The ending is not bad, but imo the series is at its best somewhere in the middle, then gets...
My wife's therapist once said "the source of mental problems are the parents in almost all cases".
Also, that shino girl seems like a better match to me.