Goshuushou-sama Ninomiya-kun

The artwork is very similar to each other, and the atmosphere resembles it's counterpart a lot. 

Two weird girls and him..... the same ecchi actions and ideas 

Similar plot... A succubus girl who is afraid of men is forced to live with a boy. Many things in Akane-iro remind of Goshuushou-sama Ninomiya-kun (especially the parents in Akane-iro and the brother/sister in G-sama N-kun) 

Both series are supernatural ecchi 'unwanted harem' love comedies with boatloads of fanservice and a very similar sense of humour. Kanokon has animal spirits and Ninomiya-kun has succubi, but the only notable difference is actually the 'normal human' protagonists: helpless, hapless, jailbaity Kouta and battle-hardened high school warrior Ninomiya. 

the two anime's have several things in common, such as supernatural beings, romance, action, and ecchi comedy, with a hint of mystery! 

Both are made by the same studio and both have some similiar problems amongst the characters as afraid of men or woman "They also have a lot laughs" 

If you like To-LOVE-Ru then you should check out Goshuushou-Sama Ninomiya-kun. I think the anime is a little simalar because Mayu and Lala are like-like Aliens (maybe) 

-Both are Romance Comedies -Reika is a lot like Chitoge from Nisekoi, I kept thinking of the situation as the same and they both have servants that act in ridiculous ways for them -Mayu is comparable to Onodera from Nisekoi, though I'd say they're a bit different. 

These anime are extremely similar in the romance dept. A guy meets a girl that he quickly becomes friends with, and overcome many hardships together, including fending off other romance idols. The main females even LOOK the same. If you didn't know better, you wouldn't be able to tell the difference. 

Two girs one with big boobs and another with nothing. the only difference is that the main one on goshuushou-sama is stronger while the other is a idiot 

Both protagonists have a fear of women due to their abuse from violent female family members. Their only cure of course is harem antics. 

Both about succubus' that are afraid of males and a male ordered to help the girl over her fear of them. They both have very different settings though. 

The show GN is about shungo a martial artist in training who has to take care of Mayu a succubus. she has androphobia and is scared of most men besides shungo. he was given the task of taking care of her so she gets over her fear. it is like inukami because the main characters live with each other and fall in love with each other. both series the main characters met when they were younger. 

More Maid/Master anime.  

Both shows feature a protagonist who ends up caring for multiple girls with special powers at his home. Epic action scenes and comedic shenanigans ensue, but enough room is left for a reasonable plot and character development. If you appreciate good creative humor, and heartwarming romantic development, you will find it in both of these shows. 

Besides both being Comedy-Romace animes. They both have a sci-fi like aspect to them; but the opposite way than the other. But, if you like one I'm sure you'll like the other. 

Two Ecchi's. Both have two similar main female characters fighting for the male lead. Both school themed, and both are very funny.  

Both series have battle-hardened leading guys surrounded by an unwanted harem of boobtacular classmates/housemates. Lots of boobs, lots of fighting, lots of laughs. 

This Anime list like very perverted in a way, but is exspecially funny on how everything is being done. His sister (Ryōko Ninomiya) and Mayu's brother (Mikihiro Tsukimura) are very funny also. I recommend this anime too all the ones that love too see this kinda anime. 

Random episodes mixed together with plot-filled episodes. But Goshuushou-sama Ninomiya-kun is more random and more ecchi, less funny than Gintama. 

Both have a sadistic female lead that's flatchested contrasting with another bustier, clumsy female lead. 

Moe+Harem+Military Asobi ni Iku yo has a nekomimi and a stronger military theme while Ninomiya-kun has a succubus theme.