Post an Anime that wasn't necessarily that sad but still made Du cry oder tear up.

Naruto and Gaara's past made me tear up (Naruto Shippuden)

Kuroshitsuji and Chuunibyou demo Koi ga Shitai ~

Yu-Gi-Oh and all it's spin off's

I just Liebe the series so much that I sometimes tear up whenever I have to say goodbye to a protagonist that I have gotten used to . I especially cried over Yusei and Yami , because I had a crush on them T-T

The last few episodes of K-On! made me cry so much. T_T

The scene where they had their last performance at the school together;
The scene where they cried and talked about what would happen in the future;
The scene where Azusa finally broke down and begged her only Friends not to leave her.

The End of Kobato is soooo...QAQ *cry cry cry*

I got pretty teary eyed in xxxHolic and Kuroshitsuji.

Squid Girl particularly in one episode

Qualidea Code
I was shocked when Canaria Utara, Hotaru Rindō, and Mahime Tenkawa seemingly died, but it later turned out they were rescued Von the real humans.

Unfortunately, Airi Yūnami wasn't so lucky...