I finished this story today shortly before the reveals ;) So I'm happy to have finished all stories while the reveals weren't up but you made it really hard (sorry it's not relevant I know)
Now for your story:
I really liked it. I love them being parents or caring for kids so Sho being an overly worried and loving parent for his daughter was a big highlight for me throughout this story. I loved the little snippets about him caring for Satsuki and thinking about her.
And his relationship with Nino was so good. I loved the slow build in the beginning (after their first meeting that was absolutely hilarious XD) I loved Sho teasing Nino but stopping when he realised that he took it too far and that he apologised for this.
Nino was so insecure and shy when with Sho alone and that was so absolutely cute. Nino was cute throughout the story and him being a music teacher was the best. I loved that he cared for his students that much (At least I believe he cared for them much and not only for Satsuki XD) and Sho absolutely in love with Nino plaiying the piano only for him ^^
Their dates were also great because it was just what they would enjoy and they didn't try to be someone else just to impress the other. I really liked that.
Then the big crisis with Satsuki and Vienna which was so well written >< all the angst Nino had and then him stupidly ending the relationship without talking about his thoughts and worries >< I really can understand him in a way but he was also so stupid. Luckily Jun and Aiba are there to but in whenenver neccessary.

The epilogue was great to end the story ^^ It's good to see that their relationship lasted till now and that Nino is much more comfortable and secure in it. As much as giving comfort to Satsuki's boyfriend :D