One popular trope is the overprotective yandere. In yandere harem fanfiction, this character is extremely possessive of the main character and will go to great lengths to keep others away. Another trope is the rivalry among the harem members. They often compete for the main character's attention, which can lead to some intense and dramatic scenes. Also, the 'damsel in distress' scenario where the main character is constantly in need of protection from the yandere or other threats is quite common.
It depends. If the portrayal of the yandere girlfriend is done in an interesting and nuanced way, it could be appealing. But if it's overly stereotypical or one-dimensional, then no.
Harry Potter is obviously a central character. Then there could be female characters like Hermione who might take on yandere traits in the fanfiction. Also, characters like Ginny Weasley could be part of the harem with yandere - like behaviors towards Harry.
There's 'Percy and His Harem of Devotion'. It shows how Percy's yandere tendencies create a complex dynamic within the harem. Each character in the harem has their own unique relationship with Percy, and the fanfiction explores how they all interact in the face of Percy's overbearing love.
A different concept could be that a yandere curse is placed on Naruto, and as a result, any girl who gets close to him starts to develop yandere traits towards him. This could lead to a really chaotic harem situation where the girls are constantly fighting over Naruto, and Naruto has to figure out how to break the curse while dealing with their over - the - top affections.
It could be a fan - made story that combines the Naruto universe with the concepts of harem (where one character is surrounded by multiple love interests), heaven (maybe a positive or ideal setting), and yandere (a character type that is overly possessive and often violent in love). However, without reading it, it's hard to say precisely.
A gift from her in a yandere manga can have multiple meanings. It could be a sign of the yandere's obsessive love, an attempt to control the situation, or a way to create drama and tension in the story. Sometimes, it might even be a red herring to mislead the reader.