Tomoya’s father remarries to another woman, giving him a stepsister, Ichika. However Ichika is 17-years old and has completely fallen in love with her stepbrother who is only 13!
Source: Crunchyroll. Will be replaced by a unique synopsis written by Anime-Planet and updated tags.
Ever since Hikaru's sister started middle school, life around the house has been uncomfortable to say the least. For his cute little sibling, Fuuka, went through a massive growth spurt, making her exceptionally tall with monstrous breasts to boot. What's worse, the girl is determined to have her beloved brother take her virginity and have a baby with her! Will Hikaru manage to keep his busty sister at bay long enough for her to graduate to high school?
Both of these short comedies follow a slightly creepy brocon sister as they dote over their unfortunate younger brother. Cyclops Shoujo Saipuu is probably a little more sexual with the jokes though.
Both os these short-episode anime are about an older sister with a pretty intense brother complex. If you liked one, you'd like the other as well.
Both are short comedies that revolve around a sister who loves her brother a tiiiiny bit too much. Cyclops Shoujo Saipuu is far more sexual than Onee-chan ga Kita, but other than that they're pretty much the same thing.
Both of these short-episode anime about about a normal brother who is suddenly forced to live with an unusual sister. Although the type of comedy is different (in Onee-chan, the jokes are about the sister's brother complex, and in Boku no Imouto the jokes are about the sister's unusal Osaka habits), I think fans of one would like the other.
In each of these short series we have a normal guy who suddenly inherits a strange sister, a sister who causes a little bit of trouble for him at that. The comedy in each is slightly different though, with the standard imouto gags being the order of the day in Onee-chan ga Kita, while Oosaka Okan focuses mainly on jokes specific to the Osaka region of Japan.