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.
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.
Well, such a girl is often obsessive and possessive. She might go to extreme lengths to keep the person she likes close to her, sometimes even using violence or threats.
There are several options. One could be Comico, which often has a wide range of manga available. Another option is Webtoon, although it's not guaranteed that 'Me and My Yandere Girlfriends' will be there. Sometimes, specific fan forums or communities might also share links, but make sure to follow the rules and be cautious of potential copyright issues.
A yandere novel is characterized by having a love-crazed character. Their love is so intense and obsessive that it borders on insanity. This can lead to all sorts of crazy plot twists and keeps readers on the edge of their seats.
Annabeth could potentially be a yandere in some fanfictions. Since she already has a strong connection with Percy in the original series, some fanfic writers might take that to an extreme, making her overly possessive. Another could be a new, made - up character. Maybe a demigod who has been watching Percy from afar and then develops an unhealthy obsession.