Well, that was certainly interesting. Seme constantly wants what others have, thinking it'll make him happy, but it never does. When he finally does find someone, uke, he pulls back so as not to make the uke's nephew sad.
Uke is a single guardian of his nephew after the death of their family.
All in all a heart touching read. I liked it.
Hinadori wa Shiokaze ni Madoromu