Definitely Fubuki and Tatsumaki. Fubuki is more outwardly interested in Saitama's power and how it can benefit her, but that interest could turn into something more romantic. Tatsumaki, on the other hand, might start off as being dismissive of Saitama but then realize his true worth and develop feelings. Additionally, a character like King, if gender - swapped in the fanfiction, could be an interesting addition to the harem. King has a unique relationship with Saitama in the original, and a female version could have a different kind of romantic dynamic with him.
Well, Mumen Rider could potentially be in a comical sense in a One Punch Man harem fanfiction. Just kidding! But seriously, characters like Fubuki are prime candidates. She has a strong personality and her own motives which could easily be intertwined with romantic feelings for Saitama. Also, any new female characters introduced to the One Punch Man universe in the fanfiction could be part of the harem. They might be normal civilians who witness Saitama's heroics up close and become smitten.
Tatsumaki is often included. Her powerful and somewhat tsundere nature makes her an interesting character in a harem setting. She has the potential for a lot of character development within a harem story. Another one is Fubuki. She is ambitious and has her own group of followers. In a harem fanfiction, she could use her wits and charm to vie for Saitama's attention. And of course, there could be original characters created specifically for the fanfiction that blend in well with the existing One Punch Man universe.
Saitama is obviously one of the most common characters since it's a One Punch Man crossover. Genos is also often included as he is Saitama's disciple. From the harem side, characters like Asuna from Sword Art Online might appear. She's a popular and strong female character. Another could be Rem from Re:Zero. Her quiet yet loyal personality could make for an interesting addition to the story. And of course, there could be characters like Erza Scarlet from Fairy Tail, with her powerful magic and tough - girl attitude.
Sakura is often a likely candidate. She has a long - standing relationship with Naruto in the original series, so it's easy to imagine her in a harem scenario with him.
Tsunade from Naruto is also a popular choice. She is a strong and mature character, which provides a contrast to some of the younger female characters. In One Punch Man, Tatsumaki is another one that is frequently part of the harem. Her powerful psychic abilities and somewhat tsundere personality add complexity to the relationships in the fanfiction.
A common storyline involves a villainess falling for Saitama. Maybe a powerful female villain who was initially out to defeat Saitama realizes his charm and power in a different way. She then joins the harem and has to adjust to the other girls. This creates a lot of tension and humorous situations as the other members of the harem are suspicious of her motives at first.
Well, one common storyline could be about Saitama getting involved in various comical and heart - warming relationships within the harem. For example, different female characters might try to understand his overpowered yet simple - minded nature. Maybe a character like Tatsumaki could initially be frustrated by Saitama's nonchalance but gradually develop feelings. Another could be that Genos gets caught in the middle of all the harem chaos as he tries to protect Saitama from any potential harm caused by the female characters' over - enthusiastic advances.
In addition to the obvious ones like James Potter, Sirius Black, Remus Lupin, and Severus Snape, some fanfictions might include other Hogwarts students. For instance, Lucius Malfoy could be an unexpected addition, as it would create a lot of interesting drama and conflict. There could also be some of the more minor characters like Frank Longbottom or Alice Fortescue, who could bring a different perspective to the harem. The beauty of fanfiction is that it can explore these less - likely pairings and relationships, making for a very diverse harem.
Luna Lovegood might be in the harem. Her unique perspective and kind - hearted nature could attract Harry. Also, Fleur Delacour could be included. She's a beautiful and powerful witch, and her allure and skills would make her a plausible addition to Harry's harem. And don't forget Cho Chang, who had a past with Harry. Her presence could add an element of unresolved feelings and history to the harem dynamic.
One popular storyline could be where the main character, who has the abilities of Naruto and Saitama from One Punch Man, finds himself in a world full of different female characters from both universes. He then has to navigate through various challenges while also dealing with the romantic interests of these female characters. For example, he might have to protect the village like Naruto, but also deal with the over - powered villains like in One Punch Man, all while the female characters are falling for his unique blend of skills and personality.
One popular storyline could be Saitama getting transported to a different universe full of harem anime characters. He might then have to deal with the various personalities and powers of these characters while still being his overpowered self. Another could be the harem characters being brought into the One Punch Man world and how they adapt to its unique setting and Saitama's laid - back attitude. There could also be a story where a villain tries to use the harem characters to distract Saitama from saving the world, but of course, Saitama is unfazed.