Similar art style, jokes, even characters and setting are kinda resembling. If you liked one you will probably like another.
Even Main Characters of Oreimo appear as Cameo
The series are both written by the same author and share the same animation studio as well. Both anime are romance comedies focusing on the relationship between the main character and his younger sister. In both shows, the brother finds out a secret about his sister which leads to him talking to her for the first time in years. You'll probably like both the anime, if you enjoy watching lighthearted comedies and anime focusing on little sisters.
-The same sibling relationship.
- The same imouto with wired hobbies.
-The same Onichan who has to deal with his Tsundere imouto.
-The same thing where it's is related to anything otaku.
both have a sister cute and tsundere >.<
For starters there done by the same writer, but also they have practically the same vibe to them. Both feature
A tsundere sister who is in love with her brother (Happens later in ore no imouto, sooner in Eromanga)
A surprisingly patient main character who takes alot of crap
Both are also have a harem vibe to them without executing it properly
In a whole i would say Eromanga is better since i dropped ore no imouto because it bored me.
Either way if you came for the incest kinda vibe you will like both
-- Both by the same author
-- Both have a sibling rivaly
-- Both girls like video games/anime/eromanga
Similar art style.
The people from "Ore no Imouto ga Konnani Kawaii Wake ga Nai" even cross over to "Eromanga-sensei".
If you liked one you will probably like another.
-Both Protagonists have sisters with weird hobbys.
-Both Protagonists, in a way or another, discover this and had to keep it as a secret.
-Both Sagiri and Kirino have the same plushies in her beds. (Not relevant but interesting)
Both series feature a brother-sister relationship.
In both anime the sister has an unusual hobby for girls her age (in OreImo it's playing little sister eroges; in Eromanga-sensei it's drawing erotic LN art)
The source material for both is written by the same author and have the same character designer.
The studio resposible for animating Eromanga is the same that animated the second season of OreImo.
These are pretty much the same thing; characters from OreImo even appear in Eromanga-sensei:
- Written by the same author
- Both feature a little sister love interest
- Self-aware comedies
- Both little sisters are closet otakus and perverts
- Both take a look at otaku culture
Eromanga-sensei is the spiritual successor of OreImo. Seriously, they are frighteningly similar. If you (somehow) liked either show, you will 100% like the other.
I would describe Eromanga-sensei as the "streamlined OreImo". There are so many comparisons you can make it isn't even funny. So if you managed to like Eromanga than you may find OreImo okay.
They are both romance anime featuring a brother (related or not) and their little sister who seems like they dislike their brother. Both are also harem anime.
Eromanga sensei is the living reincarnation of Oreimo. Both MC's in the show are very caring towards their younger siblings or let's just say they very much love their cute and loving little sisters. Both the shows involve an incest relationship although in Eromanga-sensei, they are step-siblings and they're the only ones in their house because their parents was involved in a tragic incident. Both shows are great but if you want a deeper and a better plot, I'd recommend to watch Eromangaa Sensei.
Not ignoring the fact that both have incestual themes, both focus on the interior relationship, Oreimo and Eromanga-sensei live in the same world, Oreimo made a cameo in Eromanga-senseiand vice versa, it has a good promising ending.
Overall just a (short) copy of Oreimo with a flip and lots of fun twist.
Having an otaku sister who's twice into Ero and lewd stuff...
and a nice big brother to take care of her
Same atmosphere..... with fluid art
Two shows from the same author, with somewhat similar casts (I swear, you can almost one-to-one match up the characters between the two). They're a bit absurd, but there's some humor in watching them play out.