If you liked the Boku wa Imouto ni Koi wo Suru anime, the Anime-Planet community thinks you'd like:
On a tragic night in Neo Verona, the Capulet family is murdered by Montague and the country is seized. The only Capulet survivor is the child Juliet, who is rescued by loyal knights. Fourteen years later, people in Neo Verona live in poverty and fear. Juliet has spent her life in hiding, and in disguise as the male Red Whirlwind, secretly fighting Neo Verona’s oppression. On one of her secret adventures, she is helped by Romeo and falls in love. Finally, on one fateful day, Juliet’s family reveals her heritage and their desire for her to reclaim her title and rescue Neo Verona from tyranny. Meanwhile, Juliet also discovers that Romeo is the son of her worst enemy. Can Juliet rescue Neo Verona and kill the father of the man she loves?
Alright so i know this might sound a little bit weird but if you are pretty lienient on animes, then i think if you liked "Romeo x Juliet" then you would like "I Love My Younger Sister" and also vice versa.
The animes may not sound too similar at first, but both of them are about two lovers who want to be together, but their love is forbidden. But, while one couple (Romeo x Juliet) is trying to find a way for them to be together, the other couple (I Love My Younger Sister) are trying to stay apart from each other.
If you are open to animes, mainly speaking towards "I Love My Younger Sister", then i think you would like both animes =)
When Makoto saw Kotonoha on the train one day, he fell in love at first sight. Luckily, his classmate Sekai’s nosy personality ensures him an introduction to his crush, and soon the two begin to date. However, Kotonoha isn’t the only one with eyes for Makoto - a fact that any horny teenager would be delighted with. With endless temptations, lies and heartbreak at every turn, Makoto and Kotonoha’s relationship will soon be put to the ultimate test...
At the end of the 19th century, in a time when social classes dominate society, a woman named Emma serves as a maid for a retired governess. One fateful day, a man named William from the upper class arrives at the mansion to visit the governess, and leaves having fallen in love with the young maid herself. In a time of such prejudice, love between the classes is frowned upon; but for William and Emma, their hardships are just beginning. Can the two break free of the bonds society has forced on them, or will they succumb to the pressure and banish each other from their hearts?