If you're looking for manga similar to Paradise of Sin, you might like these titles.
Hajime’s sister has hired a second butler for her maid café, and this “Prince” is seriously cramping Hajime’s style! Must he be so beautiful?! Hajime quickly loses popularity, while Prince doesn't even notice the heart-eyed lady customers! What, or who, is Prince looking at? Hajime is feeling a strange sensation....
"Hikaru Kousaka is selling himself to men" was the dangerous rumour that's going around. Ryota Takamure became involved after a weird incident that brought the two unlikely classmates together. What becomes of their relationship after Ryota is swept into the crazy world of Hikaru...?!
Whilst Seitarou has finally come to terms with the fact that Naoyuki and him will always be friends and nothing more, he is feeling a tad lonely and is looking forward to a new love. By chance, he met the beautiful and charming Hiroto through Naoyuki. Thinking that he has finally found a new love candidate, he tries to get to know more about him, and what he found completely belies the beautiful exterior... but is that all that there is to the complex Hiroto?
Beautiful naive Minato Akina has come to Tokyo to seek his fortune. Losing all his money on the first day does not bode well for our young hero. A chance meeting with down on his luck Chiba Rintarou gives Akina a shot at becoming a young idol! But Akina and Chiba are both carrying scars from the past.