If you liked the Boku wa Imouto ni Koi wo Suru anime, the Anime-Planet community thinks you'd like:
Misaki Takahashi has little hope of getting into a university, so his older brother Takahiro's friend, Usami Akihiko, offers to tutor Misaki as a favor to Takahiro - for Usami is secretly in love with him. However, as time passes Misaki realizes that he has uncomfortable and budding feelings for Usami. Meanwhile, Hiroki is a man who can't get over an unrequited love with Usami in the past - and with the help of Nowaki, he may finally learn to love again. These couples and more experience the joys and sadness of love between men under the most unlikely conditions.
Narumi Takayuki is a normal high school student with a crush on Mitsuki, the school's swim star -- that is, until he receives a profession of love from his friend Haruka. But amidst the beautiful budding relationship, tragedy strikes when an accident occurs, turning Narumi’s life upside-down. Kimi ga Nozomu Eien is a compelling drama about one man, and the choices he must make for love.
Both of these animes share a few key similarities: Forbidden love, a very adult feel and bittersweet sorrow throughout. These two animes made me feel more raw emotion than any of the other's I've seen. Both of them feature a male lead who has to be more manly than he wants to be, choosing what is right over what he wants with his whole heart. Though BokuImou is far shorter, it almost needs to be, as the entire episode from end to end has no light hearted filler, which Kimi ga Nozomu Eien managed to do for the whole season. They also have no fanservive with no ecchi to be found, which adds even more to the heartfelt feelings in them. Both of these have a unique feeling where at the end, you find it very difficult to move on to the next show. BokuImou won't have you sobbing like Nozomu does, but if you like one be sure to check out the other.
17 year old Ooizumi Naoto finds himself on set as the “making of” cameraman for a big budget TV production named Cosmopolitan Prayers. He is in heaven these days since his crush, Magami Natsumi, has been chosen for the lead heroine. But as he tries to find ways to advance their relationship, the other girls seem to also have set their sights on him with not-so-coy looks, full-body knockdowns and skirt flipping. Is he in heaven or hell? With all the chaos surrounding him, the biggest problem isn’t the incessant teasing, but whether or not the girls find out his big secret!
ulll like it because itssrtta the same thing and its about love but in love llove she trys t get her true love bac from other girls and in this new anime called i love my little sister the big brother loved loved hissister since they wer small and they managed to marry went hey grew up and wen thye grew up the little sister forgot and if i keep going on ill probablytell the whole story so yeah ull can see it on youtube if u want
Kyousuke Kosaka is a normal teenager with average grades and an average home life, but when he finds out that his overachieving younger sister Kirino has been hiding her vast anime and eroge collection from their unassuming parents, his world turns inside out! Now, having promised to help his formerly distant sibling navigate her two distinct lives, Kyousuke finds himself drawn into Kirino's world of magical girl anime and "little sister" fetish games while covering for his sibling to her parents and friends, not to mention trying to provide what guidance he can.
Mira Munakata is a typical high school freshman; he goes to school, hangs out with friends, and has sex with his father. Ok, maybe not so typical. With the affections (and advances) of everyone from childhood friends to senior classmates, Mira has a wide selection of prospects to choose from; but the only one he really wants is his loving (literally) father Kousuke. So, when Kousuke stays out late and is rumored to be married to his beautiful co worker, what’s a boy to do but cry?
When you take the forbidden romance of Boku wa Imouto ni Koi wo Suru, the comedy and the beautiful colors incorperated in the OVA, and replace the main couple with father and son, you get Papa to Kiss in the Dark. If incest is your thing, along with an adorable love story, then you'll love sinking your teeth into either of these great OVAs.