#1) I'm happy that there's a finality. I think the Manga has been stretching it out too much.
#2) The ending was destined to happen. We all knew it would be Midori and Seichi.
Those two points aside, I really preferred Ayase/Seichi I think they're a much better match.
If there is a season two it could be Kouta No Hibi since the dude is totally in love with Seichi