Shigatsu wa Kimi no Uso, Kiznaiver Recommendations
Both series have a romance/friendship centered story. Both protagonists have certain emotional or/and physical scars which prevent them from leading a normal high school life. They are both well writen, well directed, well animated masterpieces that certainly leave a mark when you are finished watching them.
Both of these anime have strong plots and well developed characters to keep you invested through the whole show. They also deal with themes such as love and friendship, however they use different plot devices to do so. As each show progresses, different character relations form and conflicts between friends will arise, which really helped flesh out the characters as well as add another level of suspense. Overall, these anime have different plotlines, but deal with similar elements, whether it be themes or characters.