 If you liked
Strike the Blood
|
 ...then you might like
Mahou Sensou
|
Both protagonists got powers randomly and a female sidekick from nowhere. Both protagonists share a harem and are very similar in personality. There are similar characters, but different plots.
Both of these anime have fantasizing imagery of either demons and vampires or magicians and wizards. The main characters are joined upon by group of friends which are almost the same and have the same personalities. If you enjoy some romantic feeling, in school and magical explosion-action. This anime is for you!