Warau Hyouteki

Both are classics '80 OVAs from the horror genre, both are technically slashers, I mean there's a certain someone/something following a group of people, most probably teenagers, yeah, probably slasher, well Warau Hyouteki can be also said to be psychological horror, but it makes up for it with the similar production values from that time. 

If you like/find interesting the concept of yandere or parallels of it, you might like any of these animes that deal with that concept, both are of the horror genre (psychological horror to be precise), have suspense moments, with their respective amounts of blood here and there, a girl obsessive over her lover and have mentally scarred characters. 

These OVAs are from the 80s. They feature a girl that wants to kill another girl for romantic purposes but all of this is done by a supernatural power those girls get. Something to check out if you are into old anime. 

These 2 OVAs are from the 80s. They contain the sense of fear that only 80s media could present. Both are really good with show don't tell so the suspense can increase. They are short and have this uneasy feeling watching. Really great if you are into 80s anime. 

Both are horror anime based upon works by Rumiko Takahashi 

YANDERE! Both feature girls who are CRAZY in love! ;D 

Yandere, yangire, and everything in-between!