Shinshi Doumei Cross, Fruits Basket Recommendations
I always felt the main character (Haine) was like Tohru, optimistic, clumsy, lovable, loyal. She always appeared happy and warm to her friends but she was facing an internal conflict. With her opitimism she cheers the Student Council. She also was an average student, but worked hard at after school jobs, dense. In the story she helps a boy who also faces family problems (no spoilers) and she turned his unhappy, dark ways, and made him see the light and he protected her. In my opinion he wasn't really a part of the family, like Kyo who was not a part of the Soma family
The plots are definately different, but the main characters' personalities almost mirror each other.
Kyou/Takanari look like they hate the main character, Tohru/Haine, but later on, they come to love her. They are also both characters that try to act cool. Tohru and Haine are very clumsy, kind characters, that can make friends with a lot of people.
I also think they look a lot like each other. :P
Most of the characters reminds me of the ones in Fruits Basket! [not only in exact looks, but somewhat character as well]
Kyo and the main guy from Shinshi Doumei Cross
Tohru and the main girl
Shigure and the rich father
Tohru's friend with wavelength powers and the main girl's best friend
Trust me, both stories are good and if you read both you would see the similarities as well :D