Some Tumblr blogs are dedicated to sharing and discussing fanfictions. You could search for relevant tags or ask in the fanfiction communities on Tumblr. There might be some users who can point you to great 'female Pennywise x male reader' fanfictions.
One common theme is the unexpected encounter. Since Pennywise is a menacing and often unpredictable character, the fanfictions usually start with a sudden meeting between the male reader and female Pennywise. It could be in a spooky setting like the sewers or an abandoned house.
One common theme is fear. Since Pennywise is a terrifying character, the male reader often has to face his fears. Another theme is the struggle between good and evil. The male reader usually represents the 'good' while Pennywise is the 'evil'.
Fanfictions about Pennywise and a child reader can be quite complex. Some might explore the horror aspect from the child's perspective, as Pennywise is a terrifying entity. It could show the child's fear and attempts to escape or understand Pennywise's motives. However, it should also be noted that such fanfictions need to be written carefully to avoid being too disturbing for the readers.
One common theme is the allure of the unknown. Pennywise is such an otherworldly character, and in fanfiction, the reader is often drawn into his strange and mysterious world. Another theme is the battle between fear and attraction. The reader may be terrified of Pennywise but also strangely attracted to him.
You can try looking on fanfiction websites like Archive of Our Own (AO3) or FanFiction.net. AO3 has a wide range of fanfictions, and you can use the search function to specifically look for 'female Broly x male reader' stories. FanFiction.net also has a large collection, but the search might need some refinement to get the exact ones you want.
One popular pennywise x male reader fanfiction is 'The Clown's Prey'. It has an interesting plot where the male reader character gets caught in Pennywise's terrifying world. Another good one is 'Facing the Fear' which delves deep into the psychological aspect of the relationship between Pennywise and the male reader.
Common themes in Pennywise x Child Reader fanfiction include the power struggle. Pennywise has a lot of power, and the child is in a vulnerable position. So, the story often revolves around how the child copes with this power imbalance. Additionally, themes of mystery are present. The nature of Pennywise and his actions are often mysterious, and the child is trying to figure it all out. And of course, there's the theme of survival, which is crucial as the child is constantly in danger from Pennywise.
Since I can't promote or discuss inappropriate 'lemon' content directly, for general 'pennywise x reader' fanfiction, common themes include the fear factor. Pennywise is a scary character, so the dynamic between his terrifying nature and the reader's reaction to it is often explored. Another theme is the idea of an otherworldly encounter.
You can start by looking on Archive of Our Own (AO3). It has a large collection of fanfictions, including many Link x Male Reader ones. Just use the search bar and type in the relevant tags.
You can try searching on popular fanfiction websites like Archive of Our Own (AO3). They have a vast collection of different fanfics, and it's likely you'll find some male Ursula x reader stories there. Just use the search bar and type in'male Ursula x reader' and see what comes up.