If you liked the Da Capo anime, the Anime-Planet community thinks you'd like:
As the school term draws to a close, Koutarou Makimura vows to confess his love to Kaho Serizawa, the most beautiful girl in school. However, on the way home, he accidentally fondles a time traveler named Ligene, causing her to strike him recklessly over the head with an hourglass. When Koutarou wakes up, he discovers that summer has been and gone and that Kaho has tragically died. Now, with Ligene's help, he must leap through time and change the events of summer in order to save Kaho from her fate.
Natsuiro no Sunadokei and Da Capo follow the same feel in the characters and even the use of colour in their art, and they both use supernatural elements of entering a different dimension. Both anime have romance as its genre, but it's just a hunch that I think you'll like this if you liked the other. Da Capo inputs more school life, and much more female characters. Natsuiro no Sunadokei has the interesting concept of time travel. Da Capo has beautiful colours.
Asami Onohara is a typical seventeen-year-old high school girl – except for the fact that she’s married to her physics teacher, Kyousuke Ichimaru. Since a relationship between a teacher and student is inappropriate, the two must hide their status from the world; in fact, the two have not yet consummated their marriage. As their everyday lives continue, new obstacles to their love present themselves daily. Can the two keep their secret safe, and will Kyousuke ever show his affection for Asami?
In Da Capo and My Wife is a High School Student there is a sense forbidden love going on between the two main characters though of a different sort from one another; in Da Capo it is a love of a brother sister type relationship and the other is between a teacher and his student. The main girl also tries her best to take care of the guy and met all of his needs and expectations.
Maiku Kamishiro has always had a photo of himself as a child in front of an old house with a young girl. One day after spotting the building in a news report, the high school boy moves to the countryside to live in the house from the picture. While living alone, making ends meet by working as a freelance programmer, Maiku gets the shock of his life when not one, but two girls turn up on his doorstep claiming to be his twin sister! With the lively Miina and timid Karen both possessing the same photograph, the pair begins living with the confused Maiku as they try to figure out which one of them is actually his sister.
from both onegai twins and da capo is the love for a sisterly figure an very important part.
however their are some differences in the way the protagonist sees his "sister".
but if you liked one you probably like the other too.
Once there lived an eccentric author called Drosselmeyer who wrote grand tragedies - one of them was the tale of a prince who sealed away an evil raven by breaking his own heart into tiny pieces. However, before the story could be completed, the author died and the tale took on a life of its own. Now, in a town where fiction and reality meet, the story continues on its tragic course with Ahiru, a duck who transforms into the beautiful Princess Tutu in order to restore the prince's heart. But will Ahiru's act of love be enough to defy the story's terrible destiny and lead to a happy ending?
Life can be tough when you're a teenager. Enter Tsukino Usagi, an average, if somewhat clumsy, junior high student whose voracious appetite for sweets and capacity for tears are offset by her enthusiasm for life. Her normal existence is suddenly turned upside down when a talking cat named Luna comes into her life. Suddenly, Usagi finds herself with the ability to transform into the superhero known as Sailor Moon. Fighting the occasional monster may be the least of her worries, though...
Both Sailor Moon and Da Capo involve magical aspects that are introduced and are both set in a high school atmosphere. They each have an undercurrent of forbidden love and a desire that those around them do not understand.