My favorite stories are about a guy finding his purpose by going through hell to protect/save the love of his life. I really like it if the girl he loves is a strong and feisty woman who equally brings him up as he does her. I am dying for more stories like this, be it anime/manga/film/dramas/novels.
Stuff I've already liked:
>Haruhi Series
>Steins;Gate and its sequels
>Macross DRYL
>Apollo's Song
>Fujimi Lovers
>Clannad