Tasogare Otome x Amnesia, Nazo no Kanojo X Recommendations
There's quite a few interesting similarities in both of these series to be honest and worth the watch:
First of all, both series involves a strange girl who has a fascination or relationship with the main protagonist. They form a bond and shares many "romantic" moments at various times.
Secondly, both series takes place at a school setting.
Third, both series has a supernatural feeling to them that are out of the ordinary.
Fourth, both series contains a lot of drama with the relationship between the two main characters as one of the driven themes. As such, both series plays on the characters' interactions and the circumstances they
-Both have a school setting.
-Unorthodox romance with a bit of ecchi.
-The chemistry between leads is similar in both shows.
-Both stories include elements of mystery but in Tasogare it is more fleshed out and serves as a major driving force for the story.
-Very immersive shows. Their killer atmosphere is their best feature.
And the most important reason:
-They both have 'X' in the title.
Both are stories about guys who find themselves infatuated with a very weird and creepy girl.