4.336 out of 5 from 203 votes
Akuto Sai enters the Constant Academy for Magick Arts hoping to become a high priest and change the world for the better. But when the school's oracle declares his future profession to be 'Demon Lord', he finds himself feared and hated by the entire student population. Now, instead of making comrades and studying for his exam, Akuto finds himself fighting off monsters, bullies, and well-meaning classmates in various states of undress. If navigating a magical high school as a transfer student wasn't difficult enough, Akuto now has to deal with a cute android ordered to observe him 24-hours a day, the precocious attention of the flying, invisible and naked Keena Soga and the advances of the school's most popular girl. Will he be able to overcome his fate, pass his classes, and mend his friendship with the violent Junko Hattori, or will he succumb to his demonic destiny?
Both of these are about a seemingly ordinary guy who has very special powers. The male lead in each story winds up attending a female dominated magic school, where they discover that he is an extremely powerful person foretold by fate. Those around him fear he will become an evil overlord & set out to stop him, yet he only wants an ordinary life.
Both series have the same basic plot, which is: A guy gets transfered to some kind of magic academy; There he learns that he is some sort of demon lord (you know an end boss) and that he is insanely powerful. Because of that he quickly attracts the attention of several powerful girls there at the academy and thus his harem is born. The female characters in both series seem to follow the same archetypes and (oddly enough) the male lead is fairly cool (which is not all that common in harem series). I don't think I need to add that all that makes those series very similar. The thing is, those manga were written differently, so even if you liked one of them it's not a given that you will like the other as well (nonetheless you should give it a try regardless).
Both Trinity Seven and Girls of the Wild's are harem series with the unusual, "down to earth" harem lead. In both of those series the main character gets transferred to a new, female dominated school, where he instantly attracts the attention of several most powerful girls (we're talking about destructive power here). Girls of the Wild's is actually a non-ecchi series and has some drama going on. On the other hand Trinity Seven is light comedy with some bits of ecchi here and there. Still, if you liked one of those, the other one might just prove interesting as well.
If you liked the male lead in one of those series, you're probably going to like the one in the other series too. They break a number of shounen stereotypes, by actually being confident, cool etc. The biggest difference between them is that one of them is a pervert. I know it all sounds vague, but if you liked one of those guys, you ought to read the other series.
The male leads in both Trinity Seven: 7-Nin no Mahoutsukai and Seitokai no Ichizon are somewhat similar. Both of them tend to say out load EVERYTHING they have on their minds. Both of them are also surrounded by girls who are potential candidates for their respective harems (they need some convincing first though) and both of them seem to be aiming into building one. If you liked one of those two manga, you might actually like the other one too, especially if you liked the male lead.