Just for the record I've never watched Attack on Titan(not my kind of anime). Log Horizon http://myanimelist.net/anime/17265/Log_H... Thousands of people find themselves trapped inside a popular online game. One person along with his guild decides to bring order and peace among the other players while trying to find a way back to there world.
Strike the Blood http://myanimelist.net/anime/18277/Strik... High school guy with a destructive power lives in a unique artificial island city where he faces numerous foes with the help of a middle school girl wielding a powerful staff. Highschool of the Dead http://myanimelist.net/anime/8074/Highsc... A group of high school students band together to survive a zombie outbreak. Dakara Boku wa, H ga Dekinai.
http://myanimelist.net/anime/12549/Dakara_Boku_wa_H_ga_Dekinai. Super pervert meets a girl claiming to be a grim reaper who tells him he has three months left to live. She promises to help change his fate if he can help her find something of great importance.
Zero no Tsukaima http://myanimelist.net/anime/1195/Zero_no_Tsukaima Modern day Tokyo boy is transported to a world filled with magic to be a familiar to a hard headed magician girl.
Fairy Tail, Owari no Seraph, Noragami, Black Butler, Black Rock Shooter, Inuyasha, etc. These are all anime that I have watched and highly recommend. Out of your suggestions though, it seems like Fairy Tail is the best option for you. That is my favorite anime of all time and I think that you will really appreciate.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.