Sad/emotional but short (12/13 ep) anime

Air and Ano Natsu de Matteru are the only really sad shows I've ever watched and Ano Natsu de Matteru isn't really all that sad.

I hasn't watch this yet but my sister watch this and she cry like I'm telling you she cry Magnitude 8.0

I say watch Anohana! It's incredibly beautiful and romantic, touching, and sad. You will most likely cry especially if you cry easily like I do XD

Just wanted to thank everyone for their replies :) going to save this post so it doesn't get lost in my plan to watch list hahaha xD Plastic Memories: seen 2 eps, not as feels as I expected it to be Sakamichi no Apollon: plan to watch Grave of the fireflies: watched the trailer, don't like the art style :( 5 centimetres per second: plan to watch Your lie in April: plan to watch Clannad: plan to watch Free!: completed a long time ago, absolutely love it! dem (yaoi) feels XD Anohana: plan to watch Angel Beats!: completed long time ago xD Tokyo Magnitude 8.0: watched the trailer, plan to watch Isshuukan Friends: watched the trailer, plan to watch Nana: watched the trailer, not sure about the art style, plan to watch White Album 2: plan to watch Terror in Resonance: plan to watch Air: watched the trailer, plan to watch Ano Natsu de Matter: watched the trailer, plan to watch Nagi no Asukura: plan to watch Erased: completed it a few days ago, I loved it! Dem feeeeels x3