One common trope is the 'accidental encounter'. For example, the male reader might accidentally bump into a female character and that starts their initial interaction which could lead to a relationship. Another is the 'protective male' trope, where the male reader has to protect the female characters in his harem from various threats.
One popular harem x male reader fanfic is 'My Harem in Another World'. It has an interesting plot where the male reader is transported to a different world and gradually forms a harem. The characters are well - developed and the story has a good mix of adventure and romance.
One popular 'dc harem x male reader fanfiction' is 'The Male Reader's DC Adventure'. It has an interesting plot where the male reader gets involved with multiple DC female characters in a unique way. Another good one could be 'Male Reader in DC Harem: A New Hero'. It shows the male reader's journey as he navigates relationships with different DC heroines.
To write a great male reader x school harem fanfiction, you need to focus on the setting. Make the school environment vivid, describe the classrooms, hallways, and cafeteria. The male reader's journey is crucial. Show his growth as he deals with the different girls in the harem. Also, don't forget about conflict. It could be internal conflict within the male reader about his feelings for the girls, or external conflict like rivalries between the harem members. Add some mystery or secrets to keep the readers hooked. For example, one girl in the harem might have a hidden past that the male reader discovers over time.
One popular trope is the 'new kid in school' scenario. The male reader character is new to the school, which makes it easier for him to get involved with different female characters. Another is the 'club recruitment' trope, where the male reader is recruited into various school clubs and meets the harem members there. Also, the 'accidental encounter' trope is common, like bumping into a girl in the hallway and starting a relationship that way.
One idea could be that the male reader is a transfer student to Beacon Academy. He has a unique Semblance that catches the attention of the RWBY girls. For example, his Semblance could be related to time manipulation. Ruby might be intrigued because she loves unique abilities and wants to learn from him. Weiss could initially be a bit standoffish but as she sees his skills and determination, she warms up to him. Blake would see something in him that reminds her of her own struggles, and Yang would be attracted to his confidence.
Well, a big theme is the power dynamics. The Transformers are much more powerful than a human reader, so how that power is balanced in the relationships is often explored. Another theme is the cultural differences. The Transformers have their own culture, and the reader has to navigate these differences. For instance, their ways of communication or their values. And of course, the theme of building a family - not in a traditional sense, but more like a group of beings who care for each other. In these fanfictions, the harem becomes like a family unit where the reader is at the center, and they all support and love each other in different ways.
One possible storyline could be that the reader is a new artist in the studio where Bendy is created. Bendy, being curious, starts to follow the reader around, and they gradually form a friendship. As time goes on, their bond deepens into something more special, like a mutual understanding and a unique form of love. They might share quiet moments in the dimly lit hallways of the old studio, with Bendy showing the reader his favorite hiding spots.