Hishoken
Complete | TSUNODA Ryoku | 2009 released
very little sex (only in the end), but I enjoyed the relationship a lot, and the personalities.
Ou-sama no Koi Asobi
Ongoing | Fujitani Youko | 2014 released
a little too simple in the end, needed more, but the relationship developed well.
Shinshi to Norainu
Complete | TENNOUJI Mio | 2000 released
only the first story was good, and it ended without reaching somewhere good.
Koakuma no Sanctuary