Kimi ga Nozomu Eien, Saishuu Heiki Kanojo Recommendations
Both start off as two people who go out but are only led to tragedy. It starts off all happy and romantic but then it all goes down hill. There are also several other similarities but I don't want to spoil it. Both have a really sad ending. Well....for Saikano it all depends on how you look at it to call it a "sad" or "happy" ending.
Both were initially set as a high school drama. Both have interesting love triangles (although Kimi ga Nozomu Eien doesn't have that whole end of the world thing). Striking similarities between the two, both are excellent dramas and both are well worth watching!
Both Kimi ga Nozomu Eien and Saikano involve the energetic best friend setting up the shy girl with the main character, although she secretly likes the main character herself. Each focus mainly on romance, although Kimi ga Nozomu Eien is more realistic than Saikano. Both shows are extremely dramatic, as well as extremely depressing.
Both are unrelenting romances that can null a person's emotions. Yet the power of the series is enough to make even the most hardened people react in some way.
They also have bitter endings that probably won't ryhme with a person's soul the way they want them too either...
Saikano has sci-fi elements, is better animated, and is a bit more depressing.
Kimi is more natural in layout, and ends bittersweetly.
Both anime start happily with a boy and a girl in love, but they quickly fall apart after a tragic event happens to the girl. They each have an incredibly depressing feel. While KimiNozo has more of a slice of life feel and Saikano has more of a fantasy feel, they are both mainly romantic stories about how a main couple deals with a tragic and life-changing event. I don't think either of them are that good, but you'd probably like one if you liked the other.
Sex, betrayals and a lot of love. Mature romances that have started in a scholar environment and finished with a lot of drama. Saikano tends to be sci-fi and takes place in a world war, KimiNozo occurs between adolescence/adulthood transition of our protagonists.
Saikano and Kimi ga Nozomu Eien try to combine romance and tragedy, but their attempts fail miserably due to a weak cast of characters, bad pacing, and a poorly-executed plot. They thrive on needless melodrama that cheapens the main story to the point that the audience is either yawning or laughing by the time the last episode rolls by. Both series have main characters that act in hysterical and overly exaggerated ways that make them almost painful to watch. So if you managed to like one, and for some mind-boggling reason you want to watch something similar, then you won't be disappointed.