Obsession is a very common theme. The yandere character is often overly obsessed with the object of their affection. For example, in 'Killing Stalking', the yandere character's obsession drives a lot of the dark and disturbing plot.
Another theme is possessiveness. Yandere characters in BL web novels usually don't want to share their loved one with anyone. In '19 Days', you can see how some characters show possessive behavior towards their partners or those they like. They can get jealous easily and act out on that jealousy.
One common characteristic is extreme possessiveness. The yandere father will often see the other male character as his sole possession and get very jealous if anyone else gets close. Another is overprotectiveness. He may go to great lengths to keep the other safe, sometimes in an overbearing way.
One popular yandere father BL web novel could be 'I'm in Love with My Father'. In this type of story, there are often complex relationships and intense emotions. The yandere father character might show possessive and overprotective behavior towards the other male character, creating a unique dynamic full of drama and passion.
Another great one could be '19 Days'. It has some yandere - like behaviors in the relationships between the characters. It also has a great art style and engaging plot that keeps you hooked as you explore the BL relationships within.
The theme of forbidden love often appears. Since it's BL, in a horror context, the love between the two male characters might be seen as something that goes against the norm in the spooky world they are in. Maybe there are forces trying to keep them apart because of their relationship, which adds an extra layer of drama and horror to the story.
Power dynamics also play a role. There could be a dominant and a submissive character, which adds an extra layer of tension and excitement to the relationship. This can be seen in novels where one character is in a position of authority, like a CEO or a senior in a school, and the other is more inexperienced.
One common theme is self - discovery. The transmigrating character often has to figure out who they are in a new world and how they fit in. For example, they might discover new abilities or aspects of their personality. Another theme is the changing of fate. They try to change the original plot, especially when it comes to the fate of the male love interest.
One common theme is the power imbalance. Since vampires are often depicted as more powerful than humans, in a BL context, this can create an interesting dynamic between the two male characters. Another theme is the struggle with identity. The vampire character may be struggling with his vampiric nature while also dealing with his feelings for the other male character.
One common theme is self - discovery. The transmigrated character often has to re - evaluate who they are in a new world and new relationships, especially in a BL context. For example, they might discover new aspects of their sexuality. Another theme is power dynamics. There could be a power struggle or a power imbalance between the two male characters at the start which then evolves over time.
Power imbalance is a common theme. One character often has more control or influence over the other, which can lead to the 'abusive' nature of the relationship. For example, in some novels, a wealthy or more socially powerful character can manipulate the other.
One common theme is possessiveness. Male yandere characters often feel an intense need to own or control the object of their affection. For example, they might not allow the love interest to interact with other people freely.