Stalker X Yandere (Re-write)

(don't judge me on the name oki i didn't know what to put it as, also this is the re-write of a happy life of shuichi and kokichi)
what happens when a stalker falls in love with a yandere and a yandere falls in love with a stalker well a lot actually many suicides and murders but what happens when those two homicidal people are put into a killing game have they're memories replaced only for them to regain they're original memory's again well let's just say that stuff isn't nice