It exists.. and i dont think it should
Basically deme and uke are going out, then seme asks this writer for an autograph and the writers like do you wanna ho fuck and the seme is overjoyed, the eriter ends up fucking the seme, and the seme gets addicted, then semes boyfriend shows up and they have a threesome and the writers editor shows up and gets fucked by the uke and thry are childhood friends who are in love, the seme and uke break up, the uke gets with the editor ehos now the uke and the uke is now a seme, the seme gets pregnant with the writers child, they get together somehow, and then the editor gets pregnant and has a child
So original seme is now a uke snd the original ukr is now a seme
Sukijanaitte Hyakkai Tonaeta