
i don't have anyone in mind so i'll just recommend u stuff w worst seme i ever read cus this is just as bad. (from what i remember not all of them are cheaters but still bad).
http://www.mangago.zone/read-manga/kiss_me_liar/ (cheater+rap1st)
http://www.mangago.zone/read-manga/yahwacheop/?cADq(abusive rap1st)
http://www.mangago.zone/read-manga/yours_to_claim/?yPBD(rap1st+manipulative but author sugar coated it)
http://www.mangago.zone/read-manga/nii_chan_harada/(pedo)
http://www.mangago.zone/read-manga/danshiryou_no_omocha/(rap1st)
http://www.mangago.zone/read-manga/hogu_hagyeongsu/?48kP(rap1st, he also made his friends rap3 uke and theres no character development)
http://www.mangago.zone/read-manga/who_s_your_daddy/(rap1st)

wait im sorry
.
*i don't have anyone in mind so i'll just recommend u stuff w worst seme i ever read cus this is just as bad. (from what i remember not all of them are cheaters but still bad).
http://www.mangago.zone/read-manga/kiss_me_liar/ (cheater+rap1st)
http://www.mangago.zone/read-manga/yahwacheop/?cADq (abusive rap1st)
http://www.mangago.zone/read-manga/yours_to_claim/?yPBD (rap1st+manipulative)
http://www.mangago.zone/read-manga/nii_chan_harada/ (pedo)
http://www.mangago.zone/read-manga/danshiryou_no_omocha/ (rap1st)
http://www.mangago.zone/read-manga/hogu_hagyeongsu/?48kP (rap1st, he also made his friends rap3 uke and theres no character development)
http://www.mangago.zone/read-manga/who_s_your_daddy/ (rap1st)
Recommend me some manhwas where there's some cheating seme (︶︿︶)