"A Man Of Virtue" reminds me of Ang Ang on the kinky aspect BUT i read it so long ago im not sure it includes a good romance background to it
There's also "Shame Application" (It's pretty wholesome, but they freaky asl)
"Junai Drop Out"
"Melt at Night"
"Leash Me Up"
"The Dreaming Trainer's Ideal Master" "Sakurada-senpai Kaizou Keikaku"
"Yakuza wo Shibatte Ii desu ka"
^Not the best in romantic areas, cause they're all short stories^
"Walk on Water" (absolute peak)
"Black Mirror" (its more psychological/horror, but it's worth every penny i swear)
andd maybe "Kabukichou Bad Trip".
That's all I can make up for that genre on the slightly greener side, as for similar but unfortunately toxic, there's "Plaything", "A Physical Education", "Blood Bank" and "Hit On By A Kinky Guy".
I NEED a yaoi rec similar to Ang Ang in that it has a rich story, GOOD ROMANCE TAHT ISNG FORGOTTEN ABOUT BECAUSE IF PLOT, and still manages to have good smut. PLEASE I FINISHED IT AND I CANT LIVE WITHOUT A MASTERPIECE LIKE THAT