There are only few anime which has made the most impact on me. Clannad and Clannad After Story is one of them. Credit goes to Jun Maeda for the beautiful soundtrack which is in harmony with story.It is one of the realistic couple story.It shows the struggle of middle class family.The show has huge ups and downs which is a perfect blend.Great characters and an overall awesome show.If you want a romantic anime to start with watch clannad