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.
The last part of The Secret of Heartbeat came from the manga " The Secret of Heartbeat." This manga was created by the Korean manga artist, Cui Han, and it told the story of a group of teenagers, including friendship, love, and growth. This comic was loved by the majority of comic readers and received high attention and evaluation in the Korean comic market.
The phrase 'killing to the extreme, dominating to the extreme, reaching the extreme of the Dao' should have first appeared in web novels. It was a concept in 'Battle Through the Heavens' that was used to describe the level that Xiao Yan had reached during his training. This concept was widely used and had been quoted in other novels.
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.