If you're looking for anime similar to Kimi ga Nozomu Eien, you might like these titles. All recommendations are made by Anime-Planet users like you!
The story of Yu Himura and Yuko Amamiya’s relationship is troubled and complex. One day, Yuko showed up at Yu's high school and, despite the two not having seen one another for ten years, confessed that Yu was her first love and still loves him. In the present, Mizuki Hayama moves in with her cousin as she prepares to begin high school. She meets his smooth and handsome neighbor, Shuichi Kuze, and begins spending increasing amounts of time with him; they begin to fall for one another despite their age difference. The tale of these relationships thus begins to unfold.
After having lived elsewhere for several years, Sana returns to the town in which he grew up in, and quickly begins to reacquaint himself to his surroundings and new high school. While there, Sana runs into his four childhood friends: Shuu, Shuri, Aoi, and Nanaka; but for some strange reason Nanaka gives him the cold shoulder. As he goes about his new daily life, can Sana rebuild his friendship with Nanaka while trying to deal with a troubling secret from his past?
I highly recommend Rumbling hearts to fans of Myself;Yourself (vice versa) because both shows ring true to the Drama and Romance genre. There is a HUGE emphasis on trauma brought from past tragedies and it greatly affects the flow of the story. The main protagonists carry deep scars which they try to slowly heal through learning to love and care for someone. Rumbling Hearts and Myself;Yourself can both be considered a bit 'darker' than other shows of the same genre depending on your view of which sins/offenses are horrible. The main protagonists in both shows face off a very huge hurdle which they must get past in order to provide realism and depth to the plot.
Yori Yuki has loved his twin sister ever since he can remember. While his parents brushed it off as a child’s fantasy, he always knew it was true love; but because it is incest, taboo, a forbidden love, he did his best to eliminate those feelings. 15 years have gone by and his feelings never wavered; in fact, they have grown stronger. He’s watched his sister Iku grow up and become a beautiful woman, and now, he can no longer contain his feelings – Yori confesses. Yet even if Iku reciprocates his feelings, that doesn’t change the fact that they’re brother and sister. Can forbidden love last?
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.
Winter Sonata and Rumbling Hearts revolve around the memory theme. While the first revolves around the amnesia of a character, the second revolves around a protagonist that spent a lot of time in a coma. Both situations caused the downfall within a couple and problems thereafter. If there is one thing that makes them even more is the heavy reliance of intense dramatic moments and the atmosphere of angst plague these two series until their end. Unless you feel bothered by the more plastic korean voice-acting, if you liked one, you will surely enjoy the other one as well.