 If you liked
Ao no Hako
|
 ...then you might like
Kaoru Hana wa Rin to Saku
|
Both Blue Box and The Fragrant Flower Blooms With Dignity are extremely wholesome romance animes. If you loved Fragrant Flower and have yet to see Blue Box I would 100% recommend watching it as soon as you can. While they differ on themes to a degree because Blue Box has a heavy influence of sports I think they share the fact they have amazingly written characters.