Kouguu no Omega
Has a really good plot. Lots of personal drama and political intrigue.
Umi no Soko
Chapter 1 was loaded in reverse, so read it from bottom to top (last page to first page) for correct order. All other chapters are fine.
Broken Boy
First seme is toxic a.f. and most of the plot and drama are driven by him. Father abuses and then rapes his son (not biological, his second wife had an affair with father's adopted brother). Older brother feels guilty about his step brother's situation, but is too scared to do anything. First seme is obsessed with the older brother and uses the MC for his plans. Eventually MC and older brother get together, and the incestuous relationship between the step brothers is the healthiest relationship in the whole story. Fantastic story, but includes disturbingly detailed images of MC's abuse.
Itoshiki Ningyo