Rando Musashi is a tough guy, an obnoxious karate star, the school troublemaker and... the most popular girl in school?! Rando was riding the bus home one day when a sudden crash resulted in a horrible wreck. He was immediately taken to intensive care under plastic surgeon extraordinaire Dr. Manabe, who treated Rando's maimed face. Yet unfortunately Dr. Manabe mistook a picture of Rando's school crush for a picture of how Rando looked before the accident. Rando awakens from a coma a full year later to find that he now has the face of Rina Kurimi, much to his dismay! He rushes out of the clinic in terror, only to run into Rina herself, who mistakes Rando for her twin sister that ran away years ago. Now living at Rina's house, Rando is now forced to play the part of Yuna Kurimi while at the same time searching for the real Yuna and attending school. Even with the help of Dr. Manabe, Rando has his work cut out for him!
Despite the obvious fact that both share the same author and artist, both shows are about protagonists hiding a huge secret that cannot be revealed no matter the cost, with hilarious results. Both are of course, doing it for the girl they love.(Which looks very similar in appearance)
Even the main hero and heroine share similar personalities. If you like Pretty Face, i can gurantee you Mx0 will be enjoyable and vice versa. The only thing Mx0 does different is that it replaces the gender bending aspects with magic, so if thats a big deal to you, do consider it as well.
both titles have the main character have a big secret in Mx0's case the person has no magic and in pretty face he lives as a girl while hiding the fact that he is a guy
Both mangas are about a male protagonist, who had a life threatening accident, but his life was saved due to unusal work of some perverted scientist. And thx to that he now have to live as a girl, and stay around the girl he has a crush on. The only real difference is that in Pretty Face the main hero only have female face, and the rest of the body is male, while in Ichinensei ni Nacchattarahe is not only fully turned into a woman, but also into a child.
Both are Shounen/Ecchi/Gender-Bender/Comedy mangas, if you enjoy one you should enjoy the other as well.
Boy that has long time crash on girl ends up (through a magical mirror in KnKnH and thanks to a mad scientist in PF) really close to the object of his affections. What happens next is pretty much stereotypical. Boy protects girl from harm's way and at the same time fends off potential boyfriends. I found KnKnH to be more entertaining but nonetheless very similar to PF.
Ouran High School is a prestigious private academy where money and status count for everything. Haruhi Fujioka is a scholarship student at the elite school, and is appalled by the lazy attitude of the rich and powerful students towards their studies. The Host Club is a clear example of this: a group of six attractive and wealthy boys spend their time entertaining the female pupils for a profit. When Haruhi accidentally breaks a ¥8,000,000 vase belonging to the club, they force her to work off her debt as one of the club's members; and to do so, she must masquerade as a boy! Can Haruhi keep her gender a secret from the club's exclusive clients?
Very few people know their secret, the secret that they aren't who they appear to be. Even though Ouran is about a girl masquerading as a boy and Pretty Face is the opposite, they both offer loads of comedy, the same problems that are required for those crossdressing (Beach, medical examinations, the usual) and some drama to give it that certain special character building demeanor.
Pretty Face is the more perverted of the two and Ouran is more romantic but fans of one should definitely check out the other, if not for a slightly different take than for the chemistry, which drives most of the events.