If you liked
Gate: Jieitai Kanochi nite, Kaku Tatakaeri
|
...then you might like
Youjo Senki
|
Both are military isekai anime. -True, Gate focuses more on the harem than actual combat, but It's still worth watching, especially if you loved the military aspect of Youjo Senki!
If you liked
Naruto
|
...then you might like
JoJo no Kimyou na Bouken (TV)
|
Just like Naruto, JoJo's in an amazing Shounen anime. In both anime the main character has to train to become stronger to defeat the villain. Didn't like Naruto's filler episodes? Now, don't you worry, for JoJo's has no filler!
If you liked
Mirai Nikki (TV)
|
...then you might like
Happy Sugar Life
|
If you enjoyed Mirai Nikki, than you'll love Happy Sugar Life for sure! Both have a yandere after all. One difference with Mirai Nikki however is that in Happy Sugar Life the yandere is more psychological, so to say. But all in all, it'll be an amazing watch experience for all you yandere fans! And it's only 12 episodes so it won't take you too long to finish it either.